2026

179. Temperature-Controlled Divergent Reactions of Bicyclo[1.1.0]butanes with Thiocyanate-based Protic Ionic Liquids.

Roy, P.; Das, R. C.; Biju, A. T.

Green Chem. 2026, 28, 8593-8603. Link 
178. Strain-Release Pudovik Reaction Enabled Diastereodivergent Hydroxy Transfer to Bicyclo[1.1.0]butanes Using Diphenyl Phosphine Oxide.

Das, R. C.; Roy, P.; Biju, A. T.

ACS Catal. 2026, 16, 8174-8187. Link 
177. Enantioselective Synthesis of P(V)-Stereogenic Phosphacycles by NHC-Catalyzed Desymmetric Annulation.

Barik, S.; Mukhopadhyay, S.; Gogoi, R.; Biju, A. T.

ChemRxiv. 2026, Preprint. Link 

176. Recent Advances in the Strain-Release Driven Reactions of Bicyclobutanes: An Emerging Landscape in Organic Synthesis.

Deswal, S.; Das, R. C.; Biju, A. T.

Chem. Soc. Rev. 2026, 55, 5572-5589. Link 
175. N-Heterocyclic Carbene-Catalyzed (3 + 3) Annulation for the Diastereo- and Atroposelective Synthesis of N–N Axially Chiral Quino(xa)linones.

Ranganathappa, S. S.; Radhakrishnan, K. K.; Paravakkal, F. D.; Biju, A. T.

ACS Sustainable Chem. Eng. 2026, 14, 5238-5247. Link 
174. HFIP-Mediated (3+2) Annulation of Bicyclobutanes with Indolyl Alcohols for Diastereoselective Access to Tetracyclic Spiroindolenines.

Deswal, S.; Biju, A. T.

Org. Lett. 2026, 28, 1392-1398. Link Highlighted in Synfacts 2026, 22, 313.Link
173. Access to C-N and N-N Axially Chiral Pyridinones via NHC-Catalyzed Dynamic Kinetic Resolution of Rotationally Restricted Cyclic Imides.

Ranganathappa, S. S.; Das, A.; Biju, A. T.

ChemRxiv. 2026, Preprint. Link 

2025
172. Lewis Acid-Assisted Formal C═S Insertion of Thioindolinones to Bicyclobutanes: Diastereoselective Access to Trisubstituted Cyclobutanethiols.

Roy, P.; Deswal, S.; Biju, A. T.

Org. Lett. 2025, 27, 10916-10922. Link 
171. HFIP-Mediated Ring-Opening of Bicyclo[1.1.0]butanes with Hydroperoxides for the Diastereoselective Access to Peroxycyclobutanes.

Gupta, P.; Roy, P.; Biju, A. T.

Org. Lett. 2025, 27, 10477-10483. Link 
170. Ruthenium(II)-Catalyzed Annulation of Vinyl Sulfoxonium Ylides with Arynes for the Rapid Synthesis of Functionalized 1-Naphthols.

Shrotriya, S.; Paravakkal, F. D.; Biju, A. T.

Org. Lett. 2025, 27, 8131-8136. Link 
169. HFIP-Mediated Spiro-annulation of Bicyclo[1.1.0]butanes with α-Halo Hydroxamates: Access to Functionalized Spirocyclobutenes.

Shajahan, S.; Deswal, S.; George, M.; Ahmad, M.; Mohanan, K.; Werz, D. B.; Biju, A. T.

Org. Lett. 2025, 27, 8137-8143. Link Highlighted in Synfacts 2025, 21, 985.  Link
168. Dynamic Kinetic Resolution Approach to C-O Axially Chiral Benzonitriles via NHC-Catalyzed Atroposelective Imine Umpolung.

Shee, S.; Ramachandran, D.; Gogoi, R.; Biju, A. T.

ACS Catal. 2025, 15, 13157-13166. Link ; ChemRxiv. 2025, Preprint. Link. Highlighted in Synfacts 2025, 21, 1049.  Link
167. Control Over S(VI)-Stereogenic Center: NHC-Catalyzed Enantioselective Synthesis of N-Acyl Cyclic Sulfonimidamides.

Barik, S.; Paravakkal, F. D.; Gupta, P.; Roy, P.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202506929. Link ; ChemRxiv. 2025, Preprint. Link. This article appears in ‘HOT Topic’: Organocatalysis Link
166. Simultaneous Activation of Bicyclobutanes and Indolyl Alcohols with HFIP: Access to Indole-Fused Bicyclo[3.1.1]heptanes.

Deswal, S.; Das, R. C.; Sarkar, D.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202501655. Link ; ChemRxiv. 2025, Preprint. Link. 
165. N-Heterocyclic-Carbene-Catalyzed Imine Umpolung for the Cross-Coupling of Quinoxalin-2-ones with Isatins.

Barik, S.; Kunhiraman, A. A.; Das, R. C.; Biju, A. T.

JACS Au 2025, 5, 948-954. Link 
164. Lewis Acid-Catalyzed 1,3-Dipolar Cycloaddition of Bicyclobutanes with Isatogens: Access to Indoxyl-Fused Bicyclo[3.1.1]heptanes.

Deswal, S.; Das, R. C.; Sarkar, D.; Biju, A. T.

JACS Au 2025, 5, 136-143. Link ; ChemRxiv. 2024, Preprint. Link. 
163. N-Heterocyclic Carbene (NHC) Organocatalysis: From Fundamentals to Frontiers.

Chakraborty, S.; Barik, S.; Biju, A. T.

Chem. Soc. Rev. 2025, 54, 1102-1124. Link. 
162. Electroredox N-Heterocyclic Carbene-Catalyzed Enantioselective (3+3) Annulation of Enals with 2-Naphthols.

Kale, V.; Shee, S.; Dutt, S.; Sinha, N.; Biju, A. T.; Banerjee, P.

Org. Lett. 2025, 27, 57-62. Link ; ChemRxiv. 2024, Preprint. Link
161. NHC-Catalyzed Aldimine Umpolung/6π-Electrocyclization Cascade to Access Tetracyclic Dihydrochromeno Indoles.

Das, R. C.; Gupta, P.; Chakraborty, S.; Jindal, G.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202416519. Link ;This article appears in ‘HOT Topic’: Organocatalysis Link

2024
160. Access to b-Keto Amino Acid Derivatives via Interrupted Polonovski Strategy Involving NHC-Catalyzed Aza Benzoin Reaction.

Dehury, B. S.; Barik, S.; Sankar, G.; Biju, A. T.

Org. Lett. 2024, 26, 10690-10695. Link. Highlighted in Synfacts 2025, 21, 318.  Link
159. Birth of Organocatalysis by N-Heterocyclic Carbenes.

Chakraborty, S.; Biju, A. T.

Nat. Catal. 2024, 7, 1060-1062. Link. Invited Retro News & Views
158. Lewis Acid-Catalyzed (3+2) Annulation of Bicyclobutanes with Ynamides: Access to 2-Amino Bicyclo[2.1.1]hexenes.

Sarkar, D.; Deswal, S.; Das, R. C.; Biju, A. T.

Chem. Sci. 2024, 15, 16243-16249. Link. 
157. Lewis Acid-Catalyzed Unusual (4+3) Annulation of para-Quinone Methides with Bicyclobutanes: Access to Oxabicyclo [4.1.1]octanes.

Deswal, S.; Guin, A.; Biju, A. T.

Angew. Chem. Int. Ed. 2024, 63, e202408610. Link; ChemRxiv. 2024, Preprint. Link. 
156. N-Heterocyclic Carbene-Catalyzed Atroposelective Synthesis of N-Aryl Phthalimides and Maleimides via Activation of Carboxylic Acids.

Barik, S.; Ranganathappa, S. S.; Biju, A. T.

Nat. Commun. 2024, 15, 5755. Link ; ChemRxiv. 2024, Preprint. Link
155. Lewis Acid-Catalyzed Diastereoselective Formal Ene Reaction of Thioindolinones/Thiolactams with Bicyclobutanes.

Guin, A.; Deswal, S.; Harariya, M. S.; Biju, A. T.

Chem. Sci. 2024, 15, 12473-12479. Link ; ChemRxiv. 2024, Preprint. Link
154. Atroposelective Synthesis of N–N Axially Chiral Indoles and Pyrroles via NHC-Catalyzed Diastereoselective (3 + 3) Annulation Strategy.

Ranganathappa, S. S.; Dehury, B, S.; Singh, G. K.; Shee, S.; Biju, A. T.

ACS Catal. 2024, 14, 6965-6972. Link. 
153. N-Heterocyclic Carbene-Catalyzed Imine Umpolung/Semipinacol Rearrangement Cascade for the Synthesis of Indoxyls.

Das, R. C.; Barik, S.; Kunhiraman, A. A.; Goswami, A.; Mondal, A.; De, M.; Biju, A. T.

ACS Catal. 2024, 14, 4202-4210. Link. 
152. Enantioselective Synthesis of Tricyclic Oxoquinolines via NHC-Catalyzed Michael-Aldol-Lactamization-Dehydration Cascade.

Barik, S.; Sankar, G.; Biju, A. T.

Chem. Commun. 2024, 60, 4290-4293. Link. Featured as the Cover Page of the issue in Chem. Commun.
151. Lewis Acid-Catalyzed One-Pot Thioalkenylation of Donor-Acceptor Cyclopropanes Using in situ Generated Dithiocarbamates and Propiolates.

Harikumar, S.; Kandy, L. T. K.; Guin, A.; Biju, A. T.

Org. Biomol. Chem. 2024, 22, 1834-1838. Link. Invited to the special issue celebrating the 100th birthday of Prof. Sukh Dev.

150. Stereoselective Alder-ene Reactions of Bicyclo[1.1.0]butanes: Facile Synthesis of Cyclopropyl- and Aryl-substituted Cyclobutenes.

Dasgupta, A.; Bhattacharjee, S.; Tong, Z.; Guin, A.; McNamee, R.; Christensen, K.; Biju, A. T.; Anderson, E.

J. Am. Chem. Soc. 2024, 146, 1196-1203. Link; ChemRxiv. 2023, Preprint. Link
149. Ring-Opening 1,3-Difunctionalization of Donor-Acceptor Cyclopropanes.

Guin, A.; Biju, A. T.

In “Donor-Acceptor Cyclopropanes in Organic Synthesis“, Chapter 5, Editors: P. Banerjee and A. T. Biju; Wiley-VCH. 2024, ISBN: 978-3-527-349876, Pages 167-190. Link

2023
148. Enantioselective Synthesis of C-O Axially Chiral Diaryl Ethers via NHC-Catalyzed Atroposelective Desymmetrization.

Shee, S.; Ranganathappa, S. S.; Gadhave, M. S.; Gogoi, R.; Biju, A. T.

Angew. Chem. Int. Ed. 2023, 62, e202311709. Link; ChemRxiv. 2023, Preprint. Link

This article appears in ‘HOT Topic’: Organocatalysis Link
147. Nucleophilic Acylation-Annulation Cascade of 2-Chlorobenzonitriles using Aldehydes Triggered by N-Heterocyclic Carbenes.

Gadhave, M. S.; Barik, S.; Wessels, F.; Biju, A. T.

Org. Lett. 2023, 25, 8314-8319. Link
146. NHC-Catalyzed Enantioselective Synthesis of Tetracyclic δ-Lactones by (4 + 2) Annulation of ortho-Quinodimethanes with Activated Ketones.

Sarkar, D.; Barik, S.; Shee, S.; Biju, A. T.

Org. Lett. 2023, 25, 7852–7857. Link
145. N-Heterocyclic Carbene-Catalyzed Atroposelective Synthesis of N-N  Axially Chiral 3-Amino Quinazolinones.

Balanna, K.; Barik, S.; Barik, S.; Shee, S.; Manoj, N.; Gonnade, R. G.; Biju, A. T.

ACS Catal. 2023, 13, 8752-8759. Link

ChemRxiv. 2023, Preprint. Link
144. Lewis Acid-Catalyzed Diastereoselective Carbofunctionalization of Bicyclobutanes Employing Naphthols.

Guin, A.; Bhattacharjee, S.; Harariya, M. S.; Biju, A. T.

Chem. Sci. 2023, 14, 6585-6591. Link
143. Benzotriazole-Triggered Three-Component Lewis Acid-Catalyzed Ring-Opening 1,3-Aminofunctionalization of Donor-Acceptor Cyclopropanes.

Deswal, S.; Guin, A.; Biju, A. T.

Org. Lett. 2023, 25, 1643-1648. Link
142. Directing Group-Free Regioselective meta-C-H Functionalization of Pyridines.

Chakraborty, S.; Biju, A. T.

Angew. Chem. Int. Ed. 2023, 62, e202300049. Link
141. N-Heterocyclic Carbene-Catalyzed aza-Michael-Mannich-Lactamization Cascade for the Enantioselective Synthesis of Pyrazoloquinolin-3-ones.

Shee, S.; Sarkar, D.; Biju, A. T.

Org. Lett. 2023, 25, 220-225. Link

2022
140. Enantioselective Synthesis of Dihydrothiopyranones via NHC-Catalyzed [3 + 3] Annulation of 2-Bromoenals with β-Oxodithioesters.

Barik, S.; Shee, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2022, 24, 8848-8853. Link
139. Dynamic Kinetic Resolution of γ,γ-Disubstituted Indole 2-Carboxaldehydes via NHC-Lewis Acid Cooperative Catalysis for the Synthesis of Tetracyclic ε-Lactones.

Balanna, K.; Barik, S.; Shee, S.; Gonnade, R. G.; Biju, A. T.

Chem. Sci. 2022, 13, 11513-11518. Link

Among the 2022 Chem.Sci. Pick of the Week Collection and 2022 Chem. Sci. HOT Article Collection
138. N-Heterocyclic Carbene-Catalyzed Umpolung of Cyclopent-4-ene-1,3-diones for Activated Olefin–Isatin Cross-Coupling.

Barik, S.; Shee, S.; Biju, A. T.

Org. Lett. 2022, 24, 6066-6071. Link 
137. Kinetic Resolution Approach to the Synthesis of C-N Axially Chiral N-Aryl Aminomaleimides via NHC-Catalyzed [3+3] Annulation.

Barik, S.; Das, R. C.; Balanna, K.; Biju, A. T.

Org. Lett. 2022, 24, 5456-5461. Link 
136. Synthesis of Trisubstituted Oxazoles via Aryne Induced [2,3] Sigmatropic Rearrangement-Annulation Cascade.

Gaykar, R. N.; Deswal, S.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2022, 24, 4145-4150. Link 
135. N-Heterocyclic Carbene (NHC)-Catalyzed Transformations Involving Azolium Enolates.

Mondal, A.; Ghosh, A.; Biju, A. T.

Chem. Rec. 2022, 22, e202200054. Link 
134. Ring-Opening 1,3-Carbothiolation of Donor-Acceptor Cyclopropanes Using Alkyl Halides and in Situ Generated Dithiocarbamates.

Guin, A.; Deswal, S.; Biju, A. T.

J. Org. Chem. 2022, 87, 6504-6513. Link
133. A Benzannulation Strategy for Rapid Access to Quinazoline-2,4-diones via Oxidative N-Heterocyclic Carbene Catalysis.

Ghosh, A.; Shee, S.; Biju, A. T.

Org. Lett. 2022, 24, 2772-2777. Link
132. Organocatalytic Routes to C-H Functionalization Reactions.

Barik, S.; Biju, A. T.

In “Handbook of C-H Functionalization (CHF)“, Editor: D. Maiti 

Wiley-VCH, 2022, In Press. Link
131. Organocatalytic Umpolung Strategies – Beyond Classical Reactivity Patterns.

Shee, S.; Ghosh, A.; Biju, A. T.

In “Asymmetric Organocatalysis: New Strategies, and Opportunities“, Chapter 22, Editors: L. Albrecht, A. Albrecht, L. Dell’Amico 

Wiley-VCH, 2022, In Press. Link
130. Molecular Rearrangements.

Guin, A.; Deswal, S.; Biju, A. T.

In “Comprehensive Aryne Synthetic Chemistry“, Chapter 3-4, Editor: H. Yoshida 

Elsevier, 2022, Pages 223-266. Link

2021
129. Aryne Three-Component Coupling Involving CS2 for the Synthesis of S-Aryl Dithiocarbamates.

Bhattacharjee, S.; Deswal, S.; Manoj, N.; Jindal, G.; Biju, A. T.

Org. Lett. 2021, 23, 9083-9088. Link
128. Synthesis of Functionalized Dihydrocoumarins by NHC-Catalyzed [3+3] Annulation of Enals with 2-Substituted Naphthoquinones.

Shee, S.; Barik, S.; Ghosh, A.; Biju, A. T.

Org. Lett. 2021, 23, 8039-8044. Link
127. Three-Component, Diastereoselective [6+3] Annulation of Tropone, Imino Esters and Arynes.

Guin, A.; Gaykar, R. N.; Deswal, S.; Biju, A. T.

Org. Lett. 2021, 23, 7456-7461. Link
126. Transition-Metal-Free C2-Functionalization of Pyridines through Aryne Three-Component Coupling.

Guin, A.; Bhattacharjee, S.; Biju, A. T.

Chem. Eur. J. 2021, 27, 13864-13869. Link

Selected as a “Hot Paper” by the Editors
125. Enantioselective Synthesis of Tetra-substituted Tetralines and Tetra-hydroindolizines via NHC-Catalyzed Azolium-Enolate Cascade.

Ghosh, A.; Barik, S.; Shee, S.; Biju, A. T.

Chem. Commun. 2021, 57, 7794-7797. Link
124. Oxidative N-Heterocyclic Carbene (NHC) Catalysis for the Rapid Access to Functionalized Pyrrolo-oxazinones.

Ghosh, A.; Barik, S.; Barik, S.; Shee, S.; Biju, A. T.

Tetrahedron. 2021, 94, 132330. Link

Invited to the Special issue on System-Oriented Development of Organocatalysis. For details, see: Link
123. Enantioselective Synthesis of 5,6-Dihydroindolizines by N-Heterocyclic Carbene (NHC)-Catalyzed Core-Structure-Inspired Strategy of Azolium Enolate Cascade.

Ghosh, A.; Shee, S.; Barik, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2021, 23, 5223-5228. Link
122. An Umpolung Oxa-[2,3] Sigmatropic Rearrangement Employing Arynes for the Synthesis of Functionalized Enol Ethers.

Gaykar, R. N.; George, M.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2021, 23, 3447-3452. Link
121. NHC-Catalyzed Desymmetrization of N-Aryl Maleimides Leading to the Atroposelective Synthesis of N-Aryl Succinimides.

Barik, S.; Shee, S.; Das, S.; Gonnade, R. G.; Jindal, G.; Mukherjee, S.; Biju, A. T.

Angew. Chem. Int. Ed. 2021, 60, 12264-12268. Link

This article appears in ‘HOT Topic’: Organocatalysis Link; Highlighted in Synfacts 2021, 17, 691.  Link
120. Revealing the Similarities of α,β-Unsaturated Iminiums and Acylazoliums in Organocatalysis.

Ghosh, A.; Biju, A. T.

Angew. Chem. Int. Ed. 2021, 60, 13712-13724. Link 

This article appears in ‘HOT Topic’: Organocatalysis Link
119. Hetarynes, Cycloalkynes and Related Intermediates.

Guin, A.; Bhattacherjee, S.; Biju, A. T.

In “Modern Aryne Chemistry“, Chapter 9, Editor: A. T. Biju; Wiley-VCH. 2021, ISBN: 978-3-527-34646-2, pages 359-406. Link
118. An Introduction to the Chemistry of Arynes.

Roy, T.; Guin, A.; Biju, A. T.

In “Modern Aryne Chemistry“, Chapter 1, Editor: A. T. Biju; Wiley-VCH. 2021, ISBN: 978-3-527-34646-2, pages 1-25. Link
117. Employing Arynes in Transition-metal-free synthesis of benzo-fused five- and six-membered heterocycles: An Update.

Roy, T.; Biju, A. T. 

In “Green Synthetic Approaches for Biologically Relevant Heterocycles“, Chapter 11, Editor: G. Brahmachari; 

Elsevier Science, 2021, 355-382. Link

2020
116. N-Heterocyclic Carbene (NHC) Organocatalysis Using Aliphatic Aldehydes.

Barik, S.; Biju, A. T.

Chem. Commun. 2020, 56, 15484-15495. Link
115. Thiophenols as Protic Nucleophilic Triggers in Aryne Three-Component Coupling.

Bhattacherjee, S.; Guin, A.; Gaykar, R. N.; Biju, A. T.

Org. Lett. 2020, 22, 9097-9101. Link
114. Enantioselective Synthesis of Tricyclic β‑Lactones by NHC-Catalyzed Desymmetrization of Cyclic 1,3-Diketones.

Shee, S.; Mukherjee, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2020, 22, 5407-5411. Link

Highlighted in Organic Chemistry Portal Link
113. Imines as Acceptors and Donors in N-Heterocyclic Carbene (NHC) Organocatalysis.

Das, T. K.; Biju, A. T.

Chem. Commun. 2020, 56, 8537-8552. Link

Selected as a “HOT Article” by Editor & Referees of Chem. Commun. Link
112. Rapid Synthesis of Zwitterionic Phosphonium Benzoates by a Three‐Component Coupling Involving Phosphines, Arynes and CO2.

Bhattacharjee, S.; Raju, A.; Gaykar, R. N.; Gonnade, R. G.; Roy, T.; Biju, A. T.

Chem. Asian J. 2020, 15, 2203-2207. Link

This article appears in ‘HOT Topic’: Carbon Dioxide Link
111. Catalytic, Enantioselective C2-Functionalization of 3-Aminobenzofurans Using N-Heterocyclic Carbenes.

Barik, S.; Shee, S.; Ghosh, A.; Biju, A. T.

Org. Lett. 2020, 22, 3865-3869. Link

110. N-Heterocyclic Carbene Catalysis Exploiting Oxidative Imine Umpolung for the Generation of Imidoyl Azoliums.

Das, T. K.; Madica, K.; Krishnan, J.; Marelli, U. K.; Biju, A. T.

J. Org. Chem. 2020, 85, 5114-5121. Link
109. Lewis Acid-Catalyzed Ring-Opening 1,3-Aminothiolation of Donor-Acceptor Cyclopropanes Using Sulfenamides.

Guin, A.; Rathod, T.; Gaykar, R. N.; Roy, T.; Biju, A. T.

Org. Lett. 2020, 22, 2276-2280. Link
108. N-Heterocyclic Carbene-Catalyzed Formal [6+2] Annulation Reaction via Cross-Conjugated Aza-Trienolate Intermediates.

Balanna, K.; Madica, K.; Mukherjee, S.; Ghosh, A.; Poisson, T.; Besset, T.; Jindal, G.; Biju, A. T.

Chem. Eur. J. 2020, 26, 818-822. Link

This article appears in ‘HOT Topic’: Organocatalysis Link
107. Uncovering the Neglected Similarities of Arynes and Donor-Acceptor Cyclopropanes.

Werz, D. B.; Biju, A. T.

Angew. Chem. Int. Ed. 2020, 59, 3385-3398. Link

2019
106. Three-Component Aminoselenation of Arynes.

Gaykar, R. N.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2019, 21, 9613-9617. Link
105. NHC-Catalyzed [3 + 3] Annulation of Thioamides and Modified Enals for the Enantioselective Synthesis of Functionalized Thiazinones.

Ghosh, A.; Barik, S.; Biju, A. T.

Org. Lett. 2019, 21, 8598-8602. Link
104. [8+3]-Cycloaddition of Tropones with Azaoxyallyl Cations.

Roy, T.; Jacob, A.; Bhattacharjee, S.; Biju, A. T.

Chem. Asian. J. 2019, 14, 4748-4753. Link

Invited to the Special Issue celebrating the 20th Anniversary of the Chemical Research Society of India (CRSI) 
103. Selective Synthesis of N-H and N-Aryl Benzotriazoles by the [3+2] Annulation of Sodium Azide with Arynes.

Guin, A.; Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

J. Org. Chem. 2019, 84, 12692-12699. Link

102. N-Heterocyclic Carbene (NHC)-Catalyzed Transformations for the Synthesis of Heterocycles.

Das, T. K.; Biju, A. T.

Progress in Heterocyclic Chemistry 2019, 31, Pages 1-82; Chapter 1, Editors: G. Gribble, J. Joule; ISBN: 9780128199626. Link

101. Iodide as a Nucleophilic Trigger in Aryne Three-Component Coupling for the Synthesis of 2-Iodobenzyl Alcohols.

Bhattacharjee, S.; Guin, A.; Gaykar, R. N.; Biju, A. T.

Org. Lett. 2019, 21, 4383-4387. Link

Highlighted in Organic Chemistry Portal 
100. N-Heterocyclic Carbene-Catalyzed Umpolung of Imines for the Enantioselective Synthesis of Dihydroquinoxalines.

Das, T. K.; Ghosh, A.; Balanna, K.; Behera, P.; Gonnade, R. G.; Marelli, U. K.; Das, A. K.; Biju, A. T.

ACS Catal. 2019, 9, 4065-4071. Link

Highlighted in Org. Chem. Front. 2019, 6, 3821. Link
99. The aryne Sommelet-Hauser rearrangement.

Roy, T.; Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

Chem. Commun. 2019, 55, 3004-3007. Link

98. NHC-Catalyzed Generation of α,β-Unsaturated Acylazoliums for the Enantioselective Synthesis of Heterocycles and Carbocycles.

Mondal, S.; Yetra, S. R.; Mukherjee, S.; Biju, A. T.

Acc. Chem. Res. 2019, 52, 425-436. Link

97. Transition-Metal-Free Thioamination of Arynes Using Sulfenamides.

Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2019, 21, 737-740. Link

96. Synthesis of 2-Aryl Naphthoquinones by the Cross-Dehydrogenative Coupling Involving NHC-Catalyzed endo-Stetter Reaction.

Ghosh, A.; Patra, A.; Mukherjee, S.; Biju, A. T.

J. Org. Chem. 2019, 84, 1103-1110. Link

95. N-Heterocyclic Carbene-Catalyzed Stetter Reaction and Related Chemistry.

Mondal, S.; Yetra, S. R.; Biju, A. T.

In “N-Heterocyclic Carbenes in Organocatalysis“, Chapter 4, Editor: A. T. Biju

Wiley-VCH, 2019, ISBN: 978-3-527-34310-2, pages 53-93. Link

2018
94. Enantioselective N-Heterocyclic Carbene-Catalyzed Cascade Reaction for the Synthesis of Pyrroloquinolines via N–H Functionalization of Indoles.

Mukherjee, S.; Shee, S.; Poisson, T.; Besset, T.; Biju, A. T.

Org. Lett. 2018, 20, 6998-7002. Link

93. Oxidative NHC-Catalysis for the Generation of Imidoyl Azoliums: Synthesis of Benzoxazoles.

Patra, A.; James, A.; Das, T. K.; Biju, A. T.

J. Org. Chem. 2018, 83, 14820-14826. Link

92. N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Spiro-glutarimides via α,β-Unsaturated Acylazoliums.

Mondal, S.; Ghosh, A.; Mukherjee, S.; Biju, A. T.

Org. Lett. 2018, 20, 4499-4503. Link

91. Recent Advances in Organocatalytic Enantioselective Synthesis of Functionalized β-Lactones.

Mukherjee, S.; Biju, A. T.

Chem. Asian J. 2018, 13, 2333-2349. Link

Invited to the special issue on Homogeneous Catalysis from Young Investigators in Asia
90. Employing Arynes for the Generation of Aryl Anion Equivalents and Subsequent Reaction with Aldehydes.

Gaykar, R. N.; Bhunia, A.; Biju, A. T.

J. Org. Chem. 2018, 83, 11333-11340. Link

89. N-Heterocyclic Carbene-Catalyzed Synthesis of α-Trifluoromethyl Esters.

Gelat, F.; Patra, A.; Pannecoucke, X.; Biju, A. T.; Poisson, T.; Besset, T.

Org. Lett. 2018, 20, 3897-3901. Link

88. Trifluoromethylthiolation of α‐Chloroaldehydes: Access to Quaternary SCF3‐Containing Centers.

Gelat, F.; Poisson, T.; Biju, A. T.; Pannecoucke, X.; Besset, T.

Eur. J. Org. Chem. 2018, 3693-3696. Link

87. N-Heterocyclic Carbene-Catalyzed Michael–Michael–Lactonization Cascade for the Enantioselective Synthesis of Tricyclic δ-Lactones.

Mukherjee, S.; Ghosh, A.; Marelli, U. K.; Biju, A. T.

Org. Lett. 2018, 20, 2952-2955. Link

86. Recent Advances in Molecular Rearrangements Involving Aryne Intermediates.

Roy, T.; Biju, A. T.

Chem. Commun. 2018, 54, 2580-2594. Link

85. Synthesis of 4-Difluoromethylquinolines by NHC-Catalyzed Umpolung of Imines.

Patra, A.; Gelat, F.; Pannecoucke, X.; Poisson, T.; Besset. T.; Biju, A. T.

Org. Lett. 2018, 20, 1086-1089. Link

2017
84. Base-Free and Catalyst-Free Synthesis of Functionalized Dihydrobenzoxazoles via Vinylogous Carbonate to Carbamate Rearrangement.

Das, T. K.; Mondal, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2017, 19, 5597-5600. Link

83. Metal-Free, Brønsted Acid-Catalyzed Formal [3+2] Annulation of Quinone Monoacetals with 2-Naphthols.

Jacob, A.; Roy, T.; Kaicharla, T.; Biju, A. T.

J. Org. Chem. 2017, 82, 11269–11274. Link

82. Enantioselective Synthesis of Functionalized β-Lactones by NHC-Catalyzed Aldol Lactonization of Ketoacids.

Mondal, S.; Mukherjee, S.; Das, T. K.; Gonnade, R. G.; Biju, A. T.

J. Org. Chem. 2017, 82, 9223-9228. Link

81. Organocatalytic Enantioselective Vinylogous Michael-Aldol Cascade for the Synthesis of Spirocyclic Compounds.

Mondal, S.; Mukherjee, S.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T. 

Org. Lett. 2017, 19, 4367–4370. Link

80. A Method for the Analysis of Free Carbenes Present after the NHC-Organocatalytic Transformation.

Das, T. K.; Biju, A. T.

Eur. J. Org. Chem. 2017, 4500-4506. Link

Invited to the special issue featuring articles by emerging investigators from India
79. AgOTf-Catalyzed Dehydrative [3+2] Annulation of Aziridines with 2-Naphthols.

Kaicharla, T.; Jacob, A.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2017, 53, 8219-8222. Link 
78. N-Heterocyclic Carbene-Catalyzed Aldol-Lactonization of Ketoacids via Dynamic Kinetic Resolution.

Mondal, S.; Mukherjee, S.; Das, T. K.; Gonnade, R. G.; Biju, A. T. 

ACS. Catal. 2017, 7, 3995-3999. Link 

Highlighted in Organic Chemistry Portal 
77. Synthesis of Functionalized Beta-Keto Arylthioethers by the Aryne Induced [2,3] Stevens Rearrangement of Allylthioethers.

Thangaraj, M.; Gaykar, R. N.; Roy, T.; Biju, A. T.   

J. Org. Chem. 2017, 82, 4470–4476. Link 

Highlighted in Synfacts 2017, 13, 643 
76.  Enantioselective Synthesis of Spiro Gamma-butyrolactones by N-Heterocyclic Carbene (NHC)-Catalyzed Formal [3+2] Annulation of Enals with 3-Hydroxy Oxindoles.

Mukherjee, S.; Joseph, S.; Bhunia, A.; Gonnade, R. G.; Yetra, S. R.; Biju, A. T. 

Org. Biomol. Chem. 2017, 16, 2013-2019. Link 
75. N-Heterocyclic Carbene-Catalyzed Umpolung of Imines

Patra, A.; Mukherjee, S.; Das, T. K.; Jain, S.; Gonnade, R. G.; Biju, A. T.   

Angew. Chem. Int. Ed. 2017, 56, 2730- 2734. Link 

Highlighted in Synfacts 2017, 13, 466; Highlighted in Organic Chemistry Portal 
74.  Facile Synthesis of N-Acyl 2-Aminobenzothiazoles by NHC-Catalyzed Direct Oxidative Amidation of Aldehydes.

Premaletha, S.; Ghosh, A.; Joseph, S.; Yetra, S. R.; Biju, A. T.,  

Chem. Commun. 2017, 53, 1478-1481. Link 

2016
73.  The Aryne [2,3] Stevens Rearrangement.

Roy, T.; Thangaraj, M.; Kaicharla, T.; Kamath, R. V.; Gonnade, R. G.; Biju, A. T.   

Org. Lett. 2016, 18, 5428 – 5431 . Link 
72. Substrate-Controlled Selectivity Switch in the Three-Component Coupling Involving Arynes, Aromatic Tertiary Amines, and CO2.

Bhojgude, S. S.; Roy, T.; Gonnade, R. G.; Biju, A. T.    

Org. Lett. 2016, 18, 5424–5427. Link 
71. Employing Arynes in Diels-Alder Reactions and Transition-Metal-Free Multicomponent Coupling and Arylation Reactions.

Bhojgude, S. S.; Bhunia, A.; Biju, A. T.,    

Acc. Chem. Res. 2016, 49, 1658–1670. Link 
70. Selective Synthesis of N-Unsubstituted and N-Aryl Indoles by the Reaction of Arynes with Azirines.

Thangaraj, M.; Bhojgude, S. S.; Jain, S.; Biju, A. T.

J. Org. Chem. 2016, 81, 8604–8611. Link 
69. Lewis Acid Catalyzed Selective Reactions of Donor–Acceptor Cyclopropanes with 2-Naphthols.

Kaicharla, T.; Roy, T.; Thangaraj, M.; Gonnade, R. G.; Biju, A. T.

Angew. Chem. Int. Ed. 2016, 55, 10061-10064. Link 

68. Synthesis of 4H-chromenes by an unexpected, K3PO4-mediated intramolecular Rauhut-Currier type reaction.

Bhunia, A.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T. 

Org. Biomol. Chem. 2016, 15, 5612-5616 . Link 

Invited to the “New Talent” Themed Collection of OBC
67. Synthesis of functionalized amino epoxides by a three-component coupling involving aziridines, arynes and aldehydes.

Roy, T.; Thangaraj, M.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2016, 52, 9044-9047. Link 

Selected for the “Emerging Investigators-2016” themed issue of Chem. Commun.
66. Recent Advances in N-Heterocyclic Carbene (NHC)-Catalysed Benzoin Reactions.

Menon, R. S.; Biju, A. T.; Nair, V.*

Beilstein J. Org. Chem. 2016, 12, 444-461. Link
65. From Insertion to Multicomponent Coupling: Temperature Dependent Reactions of Arynes with Aliphatic Alcohols.

Thangaraj, M.; Bhojgude, S. S.; Mane, M. V.; Biju, A. T.

Chem. Commun. 2016, 52, 1665-1668 . Link
64. Employing Carboxylic Acids in Aryne Multicomponent Coupling Triggered by Aziridines/Azetidines.

Roy, T.; Bhojgude, S. S.; Kaicharla, T.; Thangaraj, M.; Garai, B.; Biju, A. T.

Org. Chem. Front. 2016, 3, 71-76. Link 

2015 “Emerging Investigators” themed collection of OCF
63. Enantioselective Synthesis of Spirocyclohexadienones by NHC-Catalyzed Formal [3+3] Annulation Reaction of Enals.

Yetra, S. R.; Mondal, S.; Mukherjee, S.; Gonnade, R. G.; Biju, A. T. 

Angew. Chem. Int. Ed. 2016, 55, 268-272. Link

2015
62. Three-Component Coupling Involving Arynes, Aromatic Tertiary Amines, and Aldehydes via Aryl–Aryl Amino Group Migration.

Bhojgude, S. S.; Baviskar, D. R.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2015, 17, 6270–6273. Link
61. Diastereoselective Synthesis of Cyclopentanone-fused Spirooxindoles by N-Heterocyclic Carbene-Catalyzed Homoenolate Annulation with Isatilidenes.

Patra, A.; Bhunia, A.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T.

Org. Chem. Front. 2015, 2, 1584-1588. Link

Invited to the “Carbenes for Today” themed collection of OCF 
60. Synthesis of N-Aryl β-Amino Alcohols by Trifluoroacetic Acid-Promoted Multicomponent Coupling of Aziridines, Arynes and Water.

Roy, T.; Baviskar, D. R.; Biju, A. T. 

J. Org. Chem. 2015, 80, 11131-11137. Link
59. Reaction of N-Heterocyclic Carbenes with Chalcones Leading to the Synthesis of deoxy-Breslow Intermediates in their Oxidized Form.

Bhunia, A.; Thorat, S.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2015, 51, 13690-13693. Link
58. Recent Advances in Employing Homoenolates Generated by N-Heterocyclic Carbene (NHC) Catalysis in Carbon–Carbon Bond-Forming Reactions.

Menon, R. S.; Biju, A. T.; Nair, V.*

Chem. Soc. Rev. 2015, 44, 5040-5052. Link
57. N-Heterocyclic Carbene-Catalyzed Diastereoselective Synthesis of β-lactone-fused Cyclopentanes Using Homoenolate Annulation Reaction.

Mukherjee, S.; Mondal, S.; Patra, A.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2015, 51, 9559-9562. Link

Highlighted in Organic Chemistry Portal

56. Enantioselective Synthesis of Functionalized Pyrazoles by NHC-Catalyzed Reaction of Pyrazolones with α,β-Unsaturated Aldehydes.

Yetra, S. R.; Mondal, S.; Suresh, E.; Biju, A. T.

Org. Lett. 2015, 17, 1417-1420. Link
55. Recent Advances in the N-Heterocyclic Carbene (NHC)-Organocatalyzed Stetter Reaction and Related Chemistry.

Yetra, S. R.; Patra, A.; Biju, A. T. 

Synthesis 2015, 47, 1357-1378. Link

Invited Review; Top 10 most popular articles in April 2015

2014
54. N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Functionalized Cyclopentenes via α,β-Unsaturated Acyl Azoliums.

Mondal, S.; Yetra, S. R.; Patra, A.; Kunte, S. S.; Gonnade ,R. G.; Biju, A. T.

Chem. Commun. 2014, 50, 14539-14542. Link

Highlighted in Organic Chemistry Portal

53. Rapid Access to Benzoxaphospholes and Their Spiro Analogues by a Three-Component Coupling Involving Arynes, Phosphines, and Activated Ketones.

Bhunia, A.; Roy, T.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2014, 16, 5132-5135. Link
52.  Facile Synthesis of γ-Ketophosphonates by an Intermolecular Stetter Reaction Onto Vinylphosphonates.

Patra, A.; Bhunia, A.; Biju, A. T.

Org. Lett. 2014, 16, 4798-4801. Link

For abstracts in Organic Chemistry Portal, see: www.organic-chemistry.org/abstracts/lit4/659.shtm 

51. Multicomponent Reactions Involving Phosphines, Arynes and Aldehydes.

Bhunia, A.; Kaicharla, T.; Porwal, D.; Gonnade, R. G.; Biju, A. T. 

Chem. Commun. 2014, 50, 11389-11392. Link
50. Transition-metal-free synthesis of benzo-fused five- and six-membered heterocycles employing arynes.

Kaicharla, T.; Biju, A. T. 

In “Green Synthetic Approaches for Biologically Relevant Heterocycles“, Book Chapter, Editor: Prof. Goutam Brahmachari,

Elsevier Science, 2014, 45-76. Link
49. Tandem [4 + 2]/[2 + 2] Cycloaddition Reactions Involving Indene or Benzofurans and Arynes.

Bhojgude, S. S.; Thangaraj, M.; Suresh, E.; Biju, A. T.

Org. Lett. 2014, 16, 3576-3579. Link
48. Diels-Alder Reaction of Tropones with Arynes: Synthesis of Functionalized Benzobicyclo[3.2.2]nonatrienones.

Thangaraj, M.; Bhojgude, S. S.; Bisht, R. H.; Gonnade, R. G.; Biju, A. T.

J. Org. Chem. 2014, 79, 4757-4762. Link
47. Synthesis of Functionalized Coumarins and Quinolinones by NHC-Catalyzed Annulation of Modified Enals with Heterocyclic C-H Acids.

Yetra, S. R.; Roy, T.; Bhunia, A.; Porwal, D.; Biju, A. T. 

J. Org. Chem. 2014, 79, 4245-4251. Link
46. Practical Synthesis of Phthalimides and Benzamides by a Multicomponent Reaction Involving Arynes, Isocyanides, and CO2/H2O.

Kaicharla, T.; Thangaraj, M.; Biju, A. T.

Org. Lett. 2014, 16, 1728-1731. Link 

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/434.shtm

45. Efficient Synthesis of 9-Aryldihydrophenanthrenes by a Cascade Reaction Involving Arynes and Styrenes.

Bhojgude, S. S.; Bhunia, A.; Gonnade, R. G.; Biju ,A. T.

Org. Lett. 2014, 16, 676-679. Link
44. Employing Arynes in Transition-Metal-Free, N-Heterocycles Initiated Multicomponent Reactions.

Bhunia, A.; Biju, A. T.

Synlett. 2014, 25, 608-614. Link

Invited Synpacts Article

2013
43.  Employing Arynes in Transition-Metal-Free Monoarylation of Aromatic Tertiary Amines.

Bhojgude, S. S.; Kaicharla, T.; Biju, A. T.

Org. Lett. 2013, 15, 5452-5455. Link

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/224.shtm

42.  Asymmetric N-Heterocyclic Carbene (NHC)-Catalyzed Annulation of Modified Enals with Enolizable Aldehydes.

Yetra, S. R.; Kaicharla, T.; Kunte, S. S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2013, 15, 5202 – 5205. Link

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/202.shtm
41. Multicomponent Reactions Involving Arynes, Quinolines, and Aldehydes.

Bhunia, A.; Porwal, D.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2013, 15, 4620- 623. Link
40. Transition-Metal-Free Multicomponent Reactions Involving Arynes, N-Heterocycles and Isatins.

Bhunia, A.; Roy, T.; Pachfule, P.; Rajamohanan, P. R.; Biju, A. T. 

Angew. Chem. Int. Ed. 2013, 52, 10040-10043. Link

Among the most accessed papers in August 2013, Invited for Synpacts
39. Engaging isatins in solvent-free, sterically congested Passerini reaction.

Kaicharla, T.; Yetra, S. R.; Roy, T.; Biju, A. T.

Green Chem. 2013, 15, 1608-1614. Link
38. Enantioselective N-Heterocyclic Carbene-Catalyzed Annulations of 2-Bromoenals with 1,3-Dicarbonyl Compounds and Enamines via Chiral α,β-Unsaturated Acyl Azoliums.

Yetra, S. R.; Bhunia, A.; Patra, A.; Mane, M. V.; Vanka, K.; Biju, A. T. 

Adv. Synth. Catal. 2013, 335, 1089-1097. Link
37. NHC-Catalyzed Reaction of Enals with Hydroxy Chalcones:Diastereoselective Synthesis of Functionalized Coumarins.

Bhunia, A.; Patra, A.; Puranik, V.; Biju, A. T.   

Org. Lett. 2013, 15, 1756-759. Link

Highlighted in Synfacts 2013, 9, 670.

2012
36. Efficient Diels-Alder Reaction of 1,2-Benzoquinones with Arynes and Its Utility in One-Pot Reactions.

Kaicharla, T.; Bhojgude, S. S. ; Biju, A. T. 

Org. Lett. 2012, 14, 6238-6241. Link
35. A Practical and General Diels-Alder Reaction of Pentafulvenes with Arynes.

Bhojgude, S. S.; Kaicharla, T.; Bhunia, A.; Biju, A. T.   

Org. Lett. 2012, 14, 4098-4101. Link
34. Efficient Synthesis of γ-Keto Sulfones by NHC-Catalyzed Intermolecular Stetter Reaction.

Bhunia, A.; Yetra, S. R.; Bhojgude, S. S.; Biju, A. T. 

Org. Lett. 2012, 14, 2830-2833. Link
33. 1,2-Benzoquinones in Diels-Alder reactions, dipolar cycloadditions, nucleophilic additions, multicomponent reactions and more.

Nair, V.; Menon, R. S.; Biju, A. T.; Abhilash, K. G.  

Chem. Soc. Rev. 2012, 41, 1050-1059. Link
32. Arynes in Transition-Metal-Free Multicomponent Coupling Reactions.

Bhojgude, S. S.; Biju, A. T.    

Angew. Chem. Int. Ed. 2012, 51, 1520-1522. Link
31. Recent Advances in Transition-Metal-Free Carbon-Carbon and Carbon-Heteroatom Bond-Forming Reactions Using Arynes.

Bhunia, A.; Yetra, S. R.; Biju, A. T.    

Chem. Soc. Rev. 2012, 41, 3140-3152. Link

2011 and prior
30. Organocatalytic Asymmetric 1,6-Addition Reactions.

Biju, A. T.    

Chem. Cat. Chem. 2011, 3, 1847-1849. Link

29. Efficient Synthesis of Benzofuranones: N-Heterocyclic Carbene (NHC)/Base-Catalyzed Hydroacylation-Stetter-Rearrangement Cascade.

Padmanaban, M.; Biju, A. T.; Glorius, F.     

Org. Lett. 2011, 13, 5624- 5627. Link

28. Employing Homoenolates Generated by NHC Catalysis in Carbon-Carbon Bond-Forming Reactions: State of the Art.

Nair, V.; Menon, R. S.; Biju, A. T.; Sinu, C. R.; Paul, R. R.; Jose, A.; Sreekumar, V.    

Chem. Soc. Rev. 2011, 40, 5336-5346. Link

27. N-Heterocyclic Carbene (NHC)-Catalyzed Umpolung of Michael Acceptors for Intermolecular Reactions.

Biju, A. T.; Padmanaban, M.; Wurz, N. E.; Glorius, F.    

Angew. Chem., Int. Ed. 2011, 50, 8412-8415. Link

26. Extending NHC-Catalysis: Reaction of Aldehydes with Unconventional Reaction Partners.

Biju, A. T.; Kuhl, N. Glorius, F.    

Acc. Chem. Res. 2011, 44, 1182-1195. Link

25. Synthesis and Application of a Chiral Diborate.

Loewer, Y.; Weiß, C.; Biju, A. T.; Fröhlich, R.; Glorius. F.   

J. Org. Chem. 2011, 76, 2324-2327. Link

24. N-Heterocyclic Carbene-Catalyzed Cross-Coupling of Aromatic Aldehydes with Activated Alkyl Halides.

Padmanaban, M.; Biju, A. T.; Glorius, F.     

Org. Lett. 2011, 13, 98-101. Link

Highlighted in Synfacts 2011, 2, 209.

23. Intermolecular N-Heterocyclic Carbene-Catalyzed Hydroacylation of Arynes.

Biju, A. T.; Glorius, F.    

Angew. Chem., Int. Ed. 2010, 49, 9761-9764. Link

(This Communication is one of the most accessed papers in November 2010).

Selected as Hot Paper by Angewandte Chemie

This work has been Highlighted in Synfacts 2011, 1, 95.

22. N-Heterocyclic Carbene-Catalyzed Cascade Reaction Involving the Hydroacylation of Unactivated Alkynes.

Biju, A. T.; Wurz, N. E.; Glorius, F.    

J. Am. Chem. Soc. 2010, 132, 5970-5971. Link

(This Communication is one of the most accessed papers in April 2010).

Highlighted in Synfacts 2010, 6, 716.

21. Switching the Electron-Donor Properties of N-Heterocyclic Carbenes by a Facile Deprotonation Strategy. 

Biju, A. T.; Hirano, K.; Fröhlich, R.; Glorius, F.

Chem. Asian J. 2009, 4, 1786-1789. Link 

20. Copper-Catalyzed Synthesis of 2-Unsubstituted, N-Substituted Benzimidazoles. 

Hirano, K.; Biju, A. T.; Glorius, F.

J. Org. Chem. 2009, 74, 9570-9572. Link 

19. N-Heterocyclic Carbene-Catalyzed Hydroacylation of Unactivated Double Bonds. 

Hirano, K.†; Biju, A.T.† ; Piel, I.; Glorius, F.

J. Am. Chem. Soc. 2009, 131, 14190-14191. Link 

Highlighted in Synfacts 2009, 12, 1404.

18. Polymeric Ladderphanes. 

Chou, C.-M.; Lee, S.-L.; Chen, C.-H; Biju, A. T.; Wang, H.-W.; Wu, Y.-L.; Zhang, G.-F.; Yang, K.-W.; Lim, T.-S.; Huang, M.-J.; Tsai, P.-Y.; Lin, K.-C.; Huang, S.-L.; Chen, C.-h.; Luh, T.-Y.

J. Am. Chem. Soc. 2009, 131, 12579-12585. Link 

17. Reactions of Morita-Baylis-Hillman Acetates with Huisgen Zwitterions: A Novel Strategy for the Synthesis of β-Amino Acid Derivatives. 

Jose, A.; Paul, R. R.; Mohan, R.; Mathew, S. C.; Biju, A. T.; Suresh, E.; Nair, V.

Synthesis, 2009, 1829-1833. Link 

16. Carbon-Nitrogen Bond-Forming Reactions of Dialkyl Azodicarboxylate: A Promising Synthetic Strategy. 

Nair, V.; Biju, A. T.; Mathew, S. C.; Beneesh, P. B.

Chem. Asian J. 2008, 3, 810-820. Link 

15. Reaction of Huisgen Zwitterion with Diaryl Ketones Leading to the Facile Synthesis of Mono- and Bis(alkoxycarbonyl)hydrazones. 

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Synthesis 2008, 1078-1084. Link 

14. Reaction of TPP-Azodicarboxylate Zwitterions and Aldehydes: Unprecedented Synthesis of Acyl Carbamates.  

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Tetrahedron Lett. 2007,  48, 9018-9020. Link 

13. Efficient Higher-Order Cycloaddition Reactions of 8,8-Dicyanoheptafulvenes with Dienes.  

Nair, V.; Abhilash, K. G.; Biju, A. T.; Suresh, E.

Synthesis 2007,  1833-1836. Link 

12. Stereoselective Synthesis of 3,4-trans-Disubstituted γ-Lactams by Cerium(IV) Ammonium Nitrate Mediated Radical Cyclization of Cinnamamides.   

Nair, V.; Mohanan, K.; Suja, T. D.; Biju, A. T.

Synthesis 2007, 1179-1184. Link 

11. A Novel Reaction of the “Huisgen Zwitterion” with Chalcones and Dienones: An Efficient Strategy for the Synthesis of Pyrazoline and Pyrazolopyridazine Derivatives.   

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Angew. Chem. Int. Ed. 2007, 46, 2070-2073. Link 

Highlighted in Synfacts 2007, 577.

10. The Reaction of Huisgen Zwitterion with Diaryl-1,2-diones and Ketones: An Efficient Protocol for Carbon-Nitrogen Bond Formation.    

Nair, V.; Biju, A. T.; Mathew, S. C.

Synthesis 2007, 697-704. Link 

9. DMAP-Catalyzed Reaction of b-ketoesters and Dimethyl Acetylenedicarboxylate: An Efficient Synthesis of Polysubstituted Benzenes and Biaryls.   

Nair, V.; Vidya, N.; Biju, A. T.; Deepthi, A.; Abhilash, K. G.; Suresh, E.

Tetrahedron 2006, 62, 10136-10140. Link 

8. Engaging Zwitterions in Carbon-Carbon and Carbon-Nitrogen Bond- Forming Reactions: A Promising Synthetic Strategy.   

Nair, V.; Menon, R. S.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.

Acc. Chem. Res. 2006, 39, 520-530. Link 

7. Novel Synthesis of Highly Functionalized Pyrazolines and Pyrazoles by Triphenylphosphine Mediated Reaction of Dialkyl Azodicarboxylate with Allenic Esters.   

Nair, V.; Biju, A. T.; Mohanan, K.; Suresh, E.

Org. Lett. 2006, 8, 2213-2216. Link

6. Reaction of Huisgen Zwitterion with 1,2-Benzoquinones and Isatins: Expeditious Synthesis of Dihydro-1,2,3-Benzoxadiazoles and Spirooxadiazolines.

Nair, V.; Biju, A. T.; Vinod, A. U.; Suresh, E.

Org. Lett. 2005, 7, 5139.

5. Reaction of Diaryl-1,2-diones with Triphenylphosphine and Diethyl Azodicarboxylate Leading to N, N-Dicarboethoxy Monohydrazones via a Novel Rearrangement.

Nair, V.; Biju, A. T.; Abhilash, K. G.; Menon, R. S.; Suresh, E.

Org. Lett. 2005, 7, 2121.

4. 1,4-Dipolar Cycloaddition in Organic synthesis: A Facile Route to Isoquinoline Fused Heterocycles.

Nair, V.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.; Varma, L.; Viji, S.; Mathew, S.

ARKIVOC 2005, 9, 178.

3. One Pot Four Component Reaction of Isocyanides, Dimethyl Acetylenedicarboxylate and Cyclobutene-1,2-diones: Synthesis of Spiro heterocycles.

Nair, V.; Menon, R. S.; Deepthi, A.; Devi, B.R.; Biju, A. T.

Tetrahedron Lett. 2005, 46, 1337.

2. Novel Pyridine Catalyzed Reaction of Dimethyl Acetylenedicarboxylate with Carbonyl Compounds and N-Tosylimines: Efficient Synthesis of 2-Benzoyl Fumarates and 1-Azadienes.

Nair, V.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.; Remadevi, B.; Menon, R. S.; Rath, N. P.

Synthesis 2003, 1895.

1. The Reaction of Isoquinoline and Dimethyl Acetylenedicarboxylate with 1,2- and 1,4-diones : A Novel Synthesis of Spiro [1,3] oxazino [2,3-a] isoquinolines.

Nair, V.; Sreekanth, A. R.; Biju, A. T.; Rath, N. P.

Tetrahedron Lett. 2003, 44, 729.

 

2025
173. Access to C-N and N-N Axially Chiral Pyridinones via NHC-Catalyzed Dynamic Kinetic Resolution of Rotationally Restricted Cyclic Imides.

Ranganathappa, S. S.; Das, A.; Biju, A. T.

ChemRxiv. 2025, Preprint. Link 
172. Lewis Acid-Assisted Formal C═S Insertion of Thioindolinones to Bicyclobutanes: Diastereoselective Access to Trisubstituted Cyclobutanethiols.

Roy, P.; Deswal, S.; Biju, A. T.

Org. Lett. 2025, 27, 10916-10922. Link 
171. HFIP-Mediated Ring-Opening of Bicyclo[1.1.0]butanes with Hydroperoxides for the Diastereoselective Access to Peroxycyclobutanes.

Gupta, P.; Roy, P.; Biju, A. T.

Org. Lett. 2025, 27, 10477-10483. Link 
170. Ruthenium(II)-Catalyzed Annulation of Vinyl Sulfoxonium Ylides with Arynes for the Rapid Synthesis of Functionalized 1-Naphthols.

Shrotriya, S.; Paravakkal, F. D.; Biju, A. T.

Org. Lett. 2025, 27, 8131-8136. Link 
169. HFIP-Mediated Spiro-annulation of Bicyclo[1.1.0]butanes with α-Halo Hydroxamates: Access to Functionalized Spirocyclobutenes.

Shajahan, S.; Deswal, S.; George, M.; Ahmad, M.; Mohanan, K.; Werz, D. B.; Biju, A. T.

Org. Lett. 2025, 27, 8137-8143. Link Highlighted in Synfacts 2025, 21, 985.  Link
168. Dynamic Kinetic Resolution Approach to C-O Axially Chiral Benzonitriles via NHC-Catalyzed Atroposelective Imine Umpolung.

Shee, S.; Ramachandran, D.; Gogoi, R.; Biju, A. T.

ACS Catal. 2025, 15, 13157-13166. Link ; ChemRxiv. 2025, Preprint. Link. Highlighted in Synfacts 2025, 21, 1049.  Link
167. Control Over S(VI)-Stereogenic Center: NHC-Catalyzed Enantioselective Synthesis of N-Acyl Cyclic Sulfonimidamides.

Barik, S.; Paravakkal, F. D.; Gupta, P.; Roy, P.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202506929. Link ; ChemRxiv. 2025, Preprint. Link. This article appears in ‘HOT Topic’: Organocatalysis Link
166. Simultaneous Activation of Bicyclobutanes and Indolyl Alcohols with HFIP: Access to Indole-Fused Bicyclo[3.1.1]heptanes.

Deswal, S.; Das, R. C.; Sarkar, D.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202501655. Link ; ChemRxiv. 2025, Preprint. Link. 
165. N-Heterocyclic-Carbene-Catalyzed Imine Umpolung for the Cross-Coupling of Quinoxalin-2-ones with Isatins.

Barik, S.; Kunhiraman, A. A.; Das, R. C.; Biju, A. T.

JACS Au 2025, 5, 948-954. Link 
164. Lewis Acid-Catalyzed 1,3-Dipolar Cycloaddition of Bicyclobutanes with Isatogens: Access to Indoxyl-Fused Bicyclo[3.1.1]heptanes.

Deswal, S.; Das, R. C.; Sarkar, D.; Biju, A. T.

JACS Au 2025, 5, 136-143. Link ; ChemRxiv. 2024, Preprint. Link. 
163. N-Heterocyclic Carbene (NHC) Organocatalysis: From Fundamentals to Frontiers.

Chakraborty, S.; Barik, S.; Biju, A. T.

Chem. Soc. Rev. 2025, 54, 1102-1124. Link. 
162. Electroredox N-Heterocyclic Carbene-Catalyzed Enantioselective (3+3) Annulation of Enals with 2-Naphthols.

Kale, V.; Shee, S.; Dutt, S.; Sinha, N.; Biju, A. T.; Banerjee, P.

Org. Lett. 2025, 27, 57-62. Link ; ChemRxiv. 2024, Preprint. Link
161. NHC-Catalyzed Aldimine Umpolung/6π-Electrocyclization Cascade to Access Tetracyclic Dihydrochromeno Indoles.

Das, R. C.; Gupta, P.; Chakraborty, S.; Jindal, G.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202416519. Link ;This article appears in ‘HOT Topic’: Organocatalysis Link

2024
160. Access to b-Keto Amino Acid Derivatives via Interrupted Polonovski Strategy Involving NHC-Catalyzed Aza Benzoin Reaction.

Dehury, B. S.; Barik, S.; Sankar, G.; Biju, A. T.

Org. Lett. 2024, 26, 10690-10695. Link. Highlighted in Synfacts 2025, 21, 318.  Link
159. Birth of Organocatalysis by N-Heterocyclic Carbenes.

Chakraborty, S.; Biju, A. T.

Nat. Catal. 2024, 7, 1060-1062. Link. Invited Retro News & Views
158. Lewis Acid-Catalyzed (3+2) Annulation of Bicyclobutanes with Ynamides: Access to 2-Amino Bicyclo[2.1.1]hexenes.

Sarkar, D.; Deswal, S.; Das, R. C.; Biju, A. T.

Chem. Sci. 2024, 15, 16243-16249. Link. 
157. Lewis Acid-Catalyzed Unusual (4+3) Annulation of para-Quinone Methides with Bicyclobutanes: Access to Oxabicyclo [4.1.1]octanes.

Deswal, S.; Guin, A.; Biju, A. T.

Angew. Chem. Int. Ed. 2024, 63, e202408610. Link; ChemRxiv. 2024, Preprint. Link. 
156. N-Heterocyclic Carbene-Catalyzed Atroposelective Synthesis of N-Aryl Phthalimides and Maleimides via Activation of Carboxylic Acids.

Barik, S.; Ranganathappa, S. S.; Biju, A. T.

Nat. Commun. 2024, 15, 5755. Link ; ChemRxiv. 2024, Preprint. Link
155. Lewis Acid-Catalyzed Diastereoselective Formal Ene Reaction of Thioindolinones/Thiolactams with Bicyclobutanes.

Guin, A.; Deswal, S.; Harariya, M. S.; Biju, A. T.

Chem. Sci. 2024, 15, 12473-12479. Link ; ChemRxiv. 2024, Preprint. Link
154. Atroposelective Synthesis of N–N Axially Chiral Indoles and Pyrroles via NHC-Catalyzed Diastereoselective (3 + 3) Annulation Strategy.

Ranganathappa, S. S.; Dehury, B, S.; Singh, G. K.; Shee, S.; Biju, A. T.

ACS Catal. 2024, 14, 6965-6972. Link. 
153. N-Heterocyclic Carbene-Catalyzed Imine Umpolung/Semipinacol Rearrangement Cascade for the Synthesis of Indoxyls.

Das, R. C.; Barik, S.; Kunhiraman, A. A.; Goswami, A.; Mondal, A.; De, M.; Biju, A. T.

ACS Catal. 2024, 14, 4202-4210. Link. 
152. Enantioselective Synthesis of Tricyclic Oxoquinolines via NHC-Catalyzed Michael-Aldol-Lactamization-Dehydration Cascade.

Barik, S.; Sankar, G.; Biju, A. T.

Chem. Commun. 2024, 60, 4290-4293. Link. Featured as the Cover Page of the issue in Chem. Commun.
151. Lewis Acid-Catalyzed One-Pot Thioalkenylation of Donor-Acceptor Cyclopropanes Using in situ Generated Dithiocarbamates and Propiolates.

Harikumar, S.; Kandy, L. T. K.; Guin, A.; Biju, A. T.

Org. Biomol. Chem. 2024, 22, 1834-1838. Link. Invited to the special issue celebrating the 100th birthday of Prof. Sukh Dev.

150. Stereoselective Alder-ene Reactions of Bicyclo[1.1.0]butanes: Facile Synthesis of Cyclopropyl- and Aryl-substituted Cyclobutenes.

Dasgupta, A.; Bhattacharjee, S.; Tong, Z.; Guin, A.; McNamee, R.; Christensen, K.; Biju, A. T.; Anderson, E.

J. Am. Chem. Soc. 2024, 146, 1196-1203. Link; ChemRxiv. 2023, Preprint. Link
149. Ring-Opening 1,3-Difunctionalization of Donor-Acceptor Cyclopropanes.

Guin, A.; Biju, A. T.

In “Donor-Acceptor Cyclopropanes in Organic Synthesis“, Chapter 5, Editors: P. Banerjee and A. T. Biju; Wiley-VCH. 2024, ISBN: 978-3-527-349876, Pages 167-190. Link

2023
148. Enantioselective Synthesis of C-O Axially Chiral Diaryl Ethers via NHC-Catalyzed Atroposelective Desymmetrization.

Shee, S.; Ranganathappa, S. S.; Gadhave, M. S.; Gogoi, R.; Biju, A. T.

Angew. Chem. Int. Ed. 2023, 62, e202311709. Link; ChemRxiv. 2023, Preprint. Link

This article appears in ‘HOT Topic’: Organocatalysis Link
147. Nucleophilic Acylation-Annulation Cascade of 2-Chlorobenzonitriles using Aldehydes Triggered by N-Heterocyclic Carbenes.

Gadhave, M. S.; Barik, S.; Wessels, F.; Biju, A. T.

Org. Lett. 2023, 25, 8314-8319. Link
146. NHC-Catalyzed Enantioselective Synthesis of Tetracyclic δ-Lactones by (4 + 2) Annulation of ortho-Quinodimethanes with Activated Ketones.

Sarkar, D.; Barik, S.; Shee, S.; Biju, A. T.

Org. Lett. 2023, 25, 7852–7857. Link
145. N-Heterocyclic Carbene-Catalyzed Atroposelective Synthesis of N-N  Axially Chiral 3-Amino Quinazolinones.

Balanna, K.; Barik, S.; Barik, S.; Shee, S.; Manoj, N.; Gonnade, R. G.; Biju, A. T.

ACS Catal. 2023, 13, 8752-8759. Link

ChemRxiv. 2023, Preprint. Link
144. Lewis Acid-Catalyzed Diastereoselective Carbofunctionalization of Bicyclobutanes Employing Naphthols.

Guin, A.; Bhattacharjee, S.; Harariya, M. S.; Biju, A. T.

Chem. Sci. 2023, 14, 6585-6591. Link
143. Benzotriazole-Triggered Three-Component Lewis Acid-Catalyzed Ring-Opening 1,3-Aminofunctionalization of Donor-Acceptor Cyclopropanes.

Deswal, S.; Guin, A.; Biju, A. T.

Org. Lett. 2023, 25, 1643-1648. Link
142. Directing Group-Free Regioselective meta-C-H Functionalization of Pyridines.

Chakraborty, S.; Biju, A. T.

Angew. Chem. Int. Ed. 2023, 62, e202300049. Link
141. N-Heterocyclic Carbene-Catalyzed aza-Michael-Mannich-Lactamization Cascade for the Enantioselective Synthesis of Pyrazoloquinolin-3-ones.

Shee, S.; Sarkar, D.; Biju, A. T.

Org. Lett. 2023, 25, 220-225. Link

2022
140. Enantioselective Synthesis of Dihydrothiopyranones via NHC-Catalyzed [3 + 3] Annulation of 2-Bromoenals with β-Oxodithioesters.

Barik, S.; Shee, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2022, 24, 8848-8853. Link
139. Dynamic Kinetic Resolution of γ,γ-Disubstituted Indole 2-Carboxaldehydes via NHC-Lewis Acid Cooperative Catalysis for the Synthesis of Tetracyclic ε-Lactones.

Balanna, K.; Barik, S.; Shee, S.; Gonnade, R. G.; Biju, A. T.

Chem. Sci. 2022, 13, 11513-11518. Link

Among the 2022 Chem.Sci. Pick of the Week Collection and 2022 Chem. Sci. HOT Article Collection
138. N-Heterocyclic Carbene-Catalyzed Umpolung of Cyclopent-4-ene-1,3-diones for Activated Olefin–Isatin Cross-Coupling.

Barik, S.; Shee, S.; Biju, A. T.

Org. Lett. 2022, 24, 6066-6071. Link 
137. Kinetic Resolution Approach to the Synthesis of C-N Axially Chiral N-Aryl Aminomaleimides via NHC-Catalyzed [3+3] Annulation.

Barik, S.; Das, R. C.; Balanna, K.; Biju, A. T.

Org. Lett. 2022, 24, 5456-5461. Link 
136. Synthesis of Trisubstituted Oxazoles via Aryne Induced [2,3] Sigmatropic Rearrangement-Annulation Cascade.

Gaykar, R. N.; Deswal, S.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2022, 24, 4145-4150. Link 
135. N-Heterocyclic Carbene (NHC)-Catalyzed Transformations Involving Azolium Enolates.

Mondal, A.; Ghosh, A.; Biju, A. T.

Chem. Rec. 2022, 22, e202200054. Link 
134. Ring-Opening 1,3-Carbothiolation of Donor-Acceptor Cyclopropanes Using Alkyl Halides and in Situ Generated Dithiocarbamates.

Guin, A.; Deswal, S.; Biju, A. T.

J. Org. Chem. 2022, 87, 6504-6513. Link
133. A Benzannulation Strategy for Rapid Access to Quinazoline-2,4-diones via Oxidative N-Heterocyclic Carbene Catalysis.

Ghosh, A.; Shee, S.; Biju, A. T.

Org. Lett. 2022, 24, 2772-2777. Link
132. Organocatalytic Routes to C-H Functionalization Reactions.

Barik, S.; Biju, A. T.

In “Handbook of C-H Functionalization (CHF)“, Editor: D. Maiti 

Wiley-VCH, 2022, In Press. Link
131. Organocatalytic Umpolung Strategies – Beyond Classical Reactivity Patterns.

Shee, S.; Ghosh, A.; Biju, A. T.

In “Asymmetric Organocatalysis: New Strategies, and Opportunities“, Chapter 22, Editors: L. Albrecht, A. Albrecht, L. Dell’Amico 

Wiley-VCH, 2022, In Press. Link
130. Molecular Rearrangements.

Guin, A.; Deswal, S.; Biju, A. T.

In “Comprehensive Aryne Synthetic Chemistry“, Chapter 3-4, Editor: H. Yoshida 

Elsevier, 2022, Pages 223-266. Link

2021
129. Aryne Three-Component Coupling Involving CS2 for the Synthesis of S-Aryl Dithiocarbamates.

Bhattacharjee, S.; Deswal, S.; Manoj, N.; Jindal, G.; Biju, A. T.

Org. Lett. 2021, 23, 9083-9088. Link
128. Synthesis of Functionalized Dihydrocoumarins by NHC-Catalyzed [3+3] Annulation of Enals with 2-Substituted Naphthoquinones.

Shee, S.; Barik, S.; Ghosh, A.; Biju, A. T.

Org. Lett. 2021, 23, 8039-8044. Link
127. Three-Component, Diastereoselective [6+3] Annulation of Tropone, Imino Esters and Arynes.

Guin, A.; Gaykar, R. N.; Deswal, S.; Biju, A. T.

Org. Lett. 2021, 23, 7456-7461. Link
126. Transition-Metal-Free C2-Functionalization of Pyridines through Aryne Three-Component Coupling.

Guin, A.; Bhattacharjee, S.; Biju, A. T.

Chem. Eur. J. 2021, 27, 13864-13869. Link

Selected as a “Hot Paper” by the Editors
125. Enantioselective Synthesis of Tetra-substituted Tetralines and Tetra-hydroindolizines via NHC-Catalyzed Azolium-Enolate Cascade.

Ghosh, A.; Barik, S.; Shee, S.; Biju, A. T.

Chem. Commun. 2021, 57, 7794-7797. Link
124. Oxidative N-Heterocyclic Carbene (NHC) Catalysis for the Rapid Access to Functionalized Pyrrolo-oxazinones.

Ghosh, A.; Barik, S.; Barik, S.; Shee, S.; Biju, A. T.

Tetrahedron. 2021, 94, 132330. Link

Invited to the Special issue on System-Oriented Development of Organocatalysis. For details, see: Link
123. Enantioselective Synthesis of 5,6-Dihydroindolizines by N-Heterocyclic Carbene (NHC)-Catalyzed Core-Structure-Inspired Strategy of Azolium Enolate Cascade.

Ghosh, A.; Shee, S.; Barik, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2021, 23, 5223-5228. Link
122. An Umpolung Oxa-[2,3] Sigmatropic Rearrangement Employing Arynes for the Synthesis of Functionalized Enol Ethers.

Gaykar, R. N.; George, M.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2021, 23, 3447-3452. Link
121. NHC-Catalyzed Desymmetrization of N-Aryl Maleimides Leading to the Atroposelective Synthesis of N-Aryl Succinimides.

Barik, S.; Shee, S.; Das, S.; Gonnade, R. G.; Jindal, G.; Mukherjee, S.; Biju, A. T.

Angew. Chem. Int. Ed. 2021, 60, 12264-12268. Link

This article appears in ‘HOT Topic’: Organocatalysis Link; Highlighted in Synfacts 2021, 17, 691.  Link
120. Revealing the Similarities of α,β-Unsaturated Iminiums and Acylazoliums in Organocatalysis.

Ghosh, A.; Biju, A. T.

Angew. Chem. Int. Ed. 2021, 60, 13712-13724. Link 

This article appears in ‘HOT Topic’: Organocatalysis Link
119. Hetarynes, Cycloalkynes and Related Intermediates.

Guin, A.; Bhattacherjee, S.; Biju, A. T.

In “Modern Aryne Chemistry“, Chapter 9, Editor: A. T. Biju; Wiley-VCH. 2021, ISBN: 978-3-527-34646-2, pages 359-406. Link
118. An Introduction to the Chemistry of Arynes.

Roy, T.; Guin, A.; Biju, A. T.

In “Modern Aryne Chemistry“, Chapter 1, Editor: A. T. Biju; Wiley-VCH. 2021, ISBN: 978-3-527-34646-2, pages 1-25. Link
117. Employing Arynes in Transition-metal-free synthesis of benzo-fused five- and six-membered heterocycles: An Update.

Roy, T.; Biju, A. T. 

In “Green Synthetic Approaches for Biologically Relevant Heterocycles“, Chapter 11, Editor: G. Brahmachari; 

Elsevier Science, 2021, 355-382. Link

2020
116. N-Heterocyclic Carbene (NHC) Organocatalysis Using Aliphatic Aldehydes.

Barik, S.; Biju, A. T.

Chem. Commun. 2020, 56, 15484-15495. Link
115. Thiophenols as Protic Nucleophilic Triggers in Aryne Three-Component Coupling.

Bhattacherjee, S.; Guin, A.; Gaykar, R. N.; Biju, A. T.

Org. Lett. 2020, 22, 9097-9101. Link
114. Enantioselective Synthesis of Tricyclic β‑Lactones by NHC-Catalyzed Desymmetrization of Cyclic 1,3-Diketones.

Shee, S.; Mukherjee, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2020, 22, 5407-5411. Link

Highlighted in Organic Chemistry Portal Link
113. Imines as Acceptors and Donors in N-Heterocyclic Carbene (NHC) Organocatalysis.

Das, T. K.; Biju, A. T.

Chem. Commun. 2020, 56, 8537-8552. Link

Selected as a “HOT Article” by Editor & Referees of Chem. Commun. Link
112. Rapid Synthesis of Zwitterionic Phosphonium Benzoates by a Three‐Component Coupling Involving Phosphines, Arynes and CO2.

Bhattacharjee, S.; Raju, A.; Gaykar, R. N.; Gonnade, R. G.; Roy, T.; Biju, A. T.

Chem. Asian J. 2020, 15, 2203-2207. Link

This article appears in ‘HOT Topic’: Carbon Dioxide Link
111. Catalytic, Enantioselective C2-Functionalization of 3-Aminobenzofurans Using N-Heterocyclic Carbenes.

Barik, S.; Shee, S.; Ghosh, A.; Biju, A. T.

Org. Lett. 2020, 22, 3865-3869. Link

110. N-Heterocyclic Carbene Catalysis Exploiting Oxidative Imine Umpolung for the Generation of Imidoyl Azoliums.

Das, T. K.; Madica, K.; Krishnan, J.; Marelli, U. K.; Biju, A. T.

J. Org. Chem. 2020, 85, 5114-5121. Link
109. Lewis Acid-Catalyzed Ring-Opening 1,3-Aminothiolation of Donor-Acceptor Cyclopropanes Using Sulfenamides.

Guin, A.; Rathod, T.; Gaykar, R. N.; Roy, T.; Biju, A. T.

Org. Lett. 2020, 22, 2276-2280. Link
108. N-Heterocyclic Carbene-Catalyzed Formal [6+2] Annulation Reaction via Cross-Conjugated Aza-Trienolate Intermediates.

Balanna, K.; Madica, K.; Mukherjee, S.; Ghosh, A.; Poisson, T.; Besset, T.; Jindal, G.; Biju, A. T.

Chem. Eur. J. 2020, 26, 818-822. Link

This article appears in ‘HOT Topic’: Organocatalysis Link
107. Uncovering the Neglected Similarities of Arynes and Donor-Acceptor Cyclopropanes.

Werz, D. B.; Biju, A. T.

Angew. Chem. Int. Ed. 2020, 59, 3385-3398. Link

2019
106. Three-Component Aminoselenation of Arynes.

Gaykar, R. N.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2019, 21, 9613-9617. Link
105. NHC-Catalyzed [3 + 3] Annulation of Thioamides and Modified Enals for the Enantioselective Synthesis of Functionalized Thiazinones.

Ghosh, A.; Barik, S.; Biju, A. T.

Org. Lett. 2019, 21, 8598-8602. Link
104. [8+3]-Cycloaddition of Tropones with Azaoxyallyl Cations.

Roy, T.; Jacob, A.; Bhattacharjee, S.; Biju, A. T.

Chem. Asian. J. 2019, 14, 4748-4753. Link

Invited to the Special Issue celebrating the 20th Anniversary of the Chemical Research Society of India (CRSI) 
103. Selective Synthesis of N-H and N-Aryl Benzotriazoles by the [3+2] Annulation of Sodium Azide with Arynes.

Guin, A.; Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

J. Org. Chem. 2019, 84, 12692-12699. Link

102. N-Heterocyclic Carbene (NHC)-Catalyzed Transformations for the Synthesis of Heterocycles.

Das, T. K.; Biju, A. T.

Progress in Heterocyclic Chemistry 2019, 31, Pages 1-82; Chapter 1, Editors: G. Gribble, J. Joule; ISBN: 9780128199626. Link

101. Iodide as a Nucleophilic Trigger in Aryne Three-Component Coupling for the Synthesis of 2-Iodobenzyl Alcohols.

Bhattacharjee, S.; Guin, A.; Gaykar, R. N.; Biju, A. T.

Org. Lett. 2019, 21, 4383-4387. Link

Highlighted in Organic Chemistry Portal 
100. N-Heterocyclic Carbene-Catalyzed Umpolung of Imines for the Enantioselective Synthesis of Dihydroquinoxalines.

Das, T. K.; Ghosh, A.; Balanna, K.; Behera, P.; Gonnade, R. G.; Marelli, U. K.; Das, A. K.; Biju, A. T.

ACS Catal. 2019, 9, 4065-4071. Link

Highlighted in Org. Chem. Front. 2019, 6, 3821. Link
99. The aryne Sommelet-Hauser rearrangement.

Roy, T.; Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

Chem. Commun. 2019, 55, 3004-3007. Link

98. NHC-Catalyzed Generation of α,β-Unsaturated Acylazoliums for the Enantioselective Synthesis of Heterocycles and Carbocycles.

Mondal, S.; Yetra, S. R.; Mukherjee, S.; Biju, A. T.

Acc. Chem. Res. 2019, 52, 425-436. Link

97. Transition-Metal-Free Thioamination of Arynes Using Sulfenamides.

Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2019, 21, 737-740. Link

96. Synthesis of 2-Aryl Naphthoquinones by the Cross-Dehydrogenative Coupling Involving NHC-Catalyzed endo-Stetter Reaction.

Ghosh, A.; Patra, A.; Mukherjee, S.; Biju, A. T.

J. Org. Chem. 2019, 84, 1103-1110. Link

95. N-Heterocyclic Carbene-Catalyzed Stetter Reaction and Related Chemistry.

Mondal, S.; Yetra, S. R.; Biju, A. T.

In “N-Heterocyclic Carbenes in Organocatalysis“, Chapter 4, Editor: A. T. Biju

Wiley-VCH, 2019, ISBN: 978-3-527-34310-2, pages 53-93. Link

2018
94. Enantioselective N-Heterocyclic Carbene-Catalyzed Cascade Reaction for the Synthesis of Pyrroloquinolines via N–H Functionalization of Indoles.

Mukherjee, S.; Shee, S.; Poisson, T.; Besset, T.; Biju, A. T.

Org. Lett. 2018, 20, 6998-7002. Link

93. Oxidative NHC-Catalysis for the Generation of Imidoyl Azoliums: Synthesis of Benzoxazoles.

Patra, A.; James, A.; Das, T. K.; Biju, A. T.

J. Org. Chem. 2018, 83, 14820-14826. Link

92. N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Spiro-glutarimides via α,β-Unsaturated Acylazoliums.

Mondal, S.; Ghosh, A.; Mukherjee, S.; Biju, A. T.

Org. Lett. 2018, 20, 4499-4503. Link

91. Recent Advances in Organocatalytic Enantioselective Synthesis of Functionalized β-Lactones.

Mukherjee, S.; Biju, A. T.

Chem. Asian J. 2018, 13, 2333-2349. Link

Invited to the special issue on Homogeneous Catalysis from Young Investigators in Asia
90. Employing Arynes for the Generation of Aryl Anion Equivalents and Subsequent Reaction with Aldehydes.

Gaykar, R. N.; Bhunia, A.; Biju, A. T.

J. Org. Chem. 2018, 83, 11333-11340. Link

89. N-Heterocyclic Carbene-Catalyzed Synthesis of α-Trifluoromethyl Esters.

Gelat, F.; Patra, A.; Pannecoucke, X.; Biju, A. T.; Poisson, T.; Besset, T.

Org. Lett. 2018, 20, 3897-3901. Link

88. Trifluoromethylthiolation of α‐Chloroaldehydes: Access to Quaternary SCF3‐Containing Centers.

Gelat, F.; Poisson, T.; Biju, A. T.; Pannecoucke, X.; Besset, T.

Eur. J. Org. Chem. 2018, 3693-3696. Link

87. N-Heterocyclic Carbene-Catalyzed Michael–Michael–Lactonization Cascade for the Enantioselective Synthesis of Tricyclic δ-Lactones.

Mukherjee, S.; Ghosh, A.; Marelli, U. K.; Biju, A. T.

Org. Lett. 2018, 20, 2952-2955. Link

86. Recent Advances in Molecular Rearrangements Involving Aryne Intermediates.

Roy, T.; Biju, A. T.

Chem. Commun. 2018, 54, 2580-2594. Link

85. Synthesis of 4-Difluoromethylquinolines by NHC-Catalyzed Umpolung of Imines.

Patra, A.; Gelat, F.; Pannecoucke, X.; Poisson, T.; Besset. T.; Biju, A. T.

Org. Lett. 2018, 20, 1086-1089. Link

2017
84. Base-Free and Catalyst-Free Synthesis of Functionalized Dihydrobenzoxazoles via Vinylogous Carbonate to Carbamate Rearrangement.

Das, T. K.; Mondal, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2017, 19, 5597-5600. Link

83. Metal-Free, Brønsted Acid-Catalyzed Formal [3+2] Annulation of Quinone Monoacetals with 2-Naphthols.

Jacob, A.; Roy, T.; Kaicharla, T.; Biju, A. T.

J. Org. Chem. 2017, 82, 11269–11274. Link

82. Enantioselective Synthesis of Functionalized β-Lactones by NHC-Catalyzed Aldol Lactonization of Ketoacids.

Mondal, S.; Mukherjee, S.; Das, T. K.; Gonnade, R. G.; Biju, A. T.

J. Org. Chem. 2017, 82, 9223-9228. Link

81. Organocatalytic Enantioselective Vinylogous Michael-Aldol Cascade for the Synthesis of Spirocyclic Compounds.

Mondal, S.; Mukherjee, S.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T. 

Org. Lett. 2017, 19, 4367–4370. Link

80. A Method for the Analysis of Free Carbenes Present after the NHC-Organocatalytic Transformation.

Das, T. K.; Biju, A. T.

Eur. J. Org. Chem. 2017, 4500-4506. Link

Invited to the special issue featuring articles by emerging investigators from India
79. AgOTf-Catalyzed Dehydrative [3+2] Annulation of Aziridines with 2-Naphthols.

Kaicharla, T.; Jacob, A.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2017, 53, 8219-8222. Link 
78. N-Heterocyclic Carbene-Catalyzed Aldol-Lactonization of Ketoacids via Dynamic Kinetic Resolution.

Mondal, S.; Mukherjee, S.; Das, T. K.; Gonnade, R. G.; Biju, A. T. 

ACS. Catal. 2017, 7, 3995-3999. Link 

Highlighted in Organic Chemistry Portal 
77. Synthesis of Functionalized Beta-Keto Arylthioethers by the Aryne Induced [2,3] Stevens Rearrangement of Allylthioethers.

Thangaraj, M.; Gaykar, R. N.; Roy, T.; Biju, A. T.   

J. Org. Chem. 2017, 82, 4470–4476. Link 

Highlighted in Synfacts 2017, 13, 643 
76.  Enantioselective Synthesis of Spiro Gamma-butyrolactones by N-Heterocyclic Carbene (NHC)-Catalyzed Formal [3+2] Annulation of Enals with 3-Hydroxy Oxindoles.

Mukherjee, S.; Joseph, S.; Bhunia, A.; Gonnade, R. G.; Yetra, S. R.; Biju, A. T. 

Org. Biomol. Chem. 2017, 16, 2013-2019. Link 
75. N-Heterocyclic Carbene-Catalyzed Umpolung of Imines

Patra, A.; Mukherjee, S.; Das, T. K.; Jain, S.; Gonnade, R. G.; Biju, A. T.   

Angew. Chem. Int. Ed. 2017, 56, 2730- 2734. Link 

Highlighted in Synfacts 2017, 13, 466; Highlighted in Organic Chemistry Portal 
74.  Facile Synthesis of N-Acyl 2-Aminobenzothiazoles by NHC-Catalyzed Direct Oxidative Amidation of Aldehydes.

Premaletha, S.; Ghosh, A.; Joseph, S.; Yetra, S. R.; Biju, A. T.,  

Chem. Commun. 2017, 53, 1478-1481. Link 

2016
73.  The Aryne [2,3] Stevens Rearrangement.

Roy, T.; Thangaraj, M.; Kaicharla, T.; Kamath, R. V.; Gonnade, R. G.; Biju, A. T.   

Org. Lett. 2016, 18, 5428 – 5431 . Link 
72. Substrate-Controlled Selectivity Switch in the Three-Component Coupling Involving Arynes, Aromatic Tertiary Amines, and CO2.

Bhojgude, S. S.; Roy, T.; Gonnade, R. G.; Biju, A. T.    

Org. Lett. 2016, 18, 5424–5427. Link 
71. Employing Arynes in Diels-Alder Reactions and Transition-Metal-Free Multicomponent Coupling and Arylation Reactions.

Bhojgude, S. S.; Bhunia, A.; Biju, A. T.,    

Acc. Chem. Res. 2016, 49, 1658–1670. Link 
70. Selective Synthesis of N-Unsubstituted and N-Aryl Indoles by the Reaction of Arynes with Azirines.

Thangaraj, M.; Bhojgude, S. S.; Jain, S.; Biju, A. T.

J. Org. Chem. 2016, 81, 8604–8611. Link 
69. Lewis Acid Catalyzed Selective Reactions of Donor–Acceptor Cyclopropanes with 2-Naphthols.

Kaicharla, T.; Roy, T.; Thangaraj, M.; Gonnade, R. G.; Biju, A. T.

Angew. Chem. Int. Ed. 2016, 55, 10061-10064. Link 

68. Synthesis of 4H-chromenes by an unexpected, K3PO4-mediated intramolecular Rauhut-Currier type reaction.

Bhunia, A.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T. 

Org. Biomol. Chem. 2016, 15, 5612-5616 . Link 

Invited to the “New Talent” Themed Collection of OBC
67. Synthesis of functionalized amino epoxides by a three-component coupling involving aziridines, arynes and aldehydes.

Roy, T.; Thangaraj, M.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2016, 52, 9044-9047. Link 

Selected for the “Emerging Investigators-2016” themed issue of Chem. Commun.
66. Recent Advances in N-Heterocyclic Carbene (NHC)-Catalysed Benzoin Reactions.

Menon, R. S.; Biju, A. T.; Nair, V.*

Beilstein J. Org. Chem. 2016, 12, 444-461. Link
65. From Insertion to Multicomponent Coupling: Temperature Dependent Reactions of Arynes with Aliphatic Alcohols.

Thangaraj, M.; Bhojgude, S. S.; Mane, M. V.; Biju, A. T.

Chem. Commun. 2016, 52, 1665-1668 . Link
64. Employing Carboxylic Acids in Aryne Multicomponent Coupling Triggered by Aziridines/Azetidines.

Roy, T.; Bhojgude, S. S.; Kaicharla, T.; Thangaraj, M.; Garai, B.; Biju, A. T.

Org. Chem. Front. 2016, 3, 71-76. Link 

2015 “Emerging Investigators” themed collection of OCF
63. Enantioselective Synthesis of Spirocyclohexadienones by NHC-Catalyzed Formal [3+3] Annulation Reaction of Enals.

Yetra, S. R.; Mondal, S.; Mukherjee, S.; Gonnade, R. G.; Biju, A. T. 

Angew. Chem. Int. Ed. 2016, 55, 268-272. Link

2015
62. Three-Component Coupling Involving Arynes, Aromatic Tertiary Amines, and Aldehydes via Aryl–Aryl Amino Group Migration.

Bhojgude, S. S.; Baviskar, D. R.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2015, 17, 6270–6273. Link
61. Diastereoselective Synthesis of Cyclopentanone-fused Spirooxindoles by N-Heterocyclic Carbene-Catalyzed Homoenolate Annulation with Isatilidenes.

Patra, A.; Bhunia, A.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T.

Org. Chem. Front. 2015, 2, 1584-1588. Link

Invited to the “Carbenes for Today” themed collection of OCF 
60. Synthesis of N-Aryl β-Amino Alcohols by Trifluoroacetic Acid-Promoted Multicomponent Coupling of Aziridines, Arynes and Water.

Roy, T.; Baviskar, D. R.; Biju, A. T. 

J. Org. Chem. 2015, 80, 11131-11137. Link
59. Reaction of N-Heterocyclic Carbenes with Chalcones Leading to the Synthesis of deoxy-Breslow Intermediates in their Oxidized Form.

Bhunia, A.; Thorat, S.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2015, 51, 13690-13693. Link
58. Recent Advances in Employing Homoenolates Generated by N-Heterocyclic Carbene (NHC) Catalysis in Carbon–Carbon Bond-Forming Reactions.

Menon, R. S.; Biju, A. T.; Nair, V.*

Chem. Soc. Rev. 2015, 44, 5040-5052. Link
57. N-Heterocyclic Carbene-Catalyzed Diastereoselective Synthesis of β-lactone-fused Cyclopentanes Using Homoenolate Annulation Reaction.

Mukherjee, S.; Mondal, S.; Patra, A.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2015, 51, 9559-9562. Link

Highlighted in Organic Chemistry Portal

56. Enantioselective Synthesis of Functionalized Pyrazoles by NHC-Catalyzed Reaction of Pyrazolones with α,β-Unsaturated Aldehydes.

Yetra, S. R.; Mondal, S.; Suresh, E.; Biju, A. T.

Org. Lett. 2015, 17, 1417-1420. Link
55. Recent Advances in the N-Heterocyclic Carbene (NHC)-Organocatalyzed Stetter Reaction and Related Chemistry.

Yetra, S. R.; Patra, A.; Biju, A. T. 

Synthesis 2015, 47, 1357-1378. Link

Invited Review; Top 10 most popular articles in April 2015

2014
54. N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Functionalized Cyclopentenes via α,β-Unsaturated Acyl Azoliums.

Mondal, S.; Yetra, S. R.; Patra, A.; Kunte, S. S.; Gonnade ,R. G.; Biju, A. T.

Chem. Commun. 2014, 50, 14539-14542. Link

Highlighted in Organic Chemistry Portal

53. Rapid Access to Benzoxaphospholes and Their Spiro Analogues by a Three-Component Coupling Involving Arynes, Phosphines, and Activated Ketones.

Bhunia, A.; Roy, T.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2014, 16, 5132-5135. Link
52.  Facile Synthesis of γ-Ketophosphonates by an Intermolecular Stetter Reaction Onto Vinylphosphonates.

Patra, A.; Bhunia, A.; Biju, A. T.

Org. Lett. 2014, 16, 4798-4801. Link

For abstracts in Organic Chemistry Portal, see: www.organic-chemistry.org/abstracts/lit4/659.shtm 

51. Multicomponent Reactions Involving Phosphines, Arynes and Aldehydes.

Bhunia, A.; Kaicharla, T.; Porwal, D.; Gonnade, R. G.; Biju, A. T. 

Chem. Commun. 2014, 50, 11389-11392. Link
50. Transition-metal-free synthesis of benzo-fused five- and six-membered heterocycles employing arynes.

Kaicharla, T.; Biju, A. T. 

In “Green Synthetic Approaches for Biologically Relevant Heterocycles“, Book Chapter, Editor: Prof. Goutam Brahmachari,

Elsevier Science, 2014, 45-76. Link
49. Tandem [4 + 2]/[2 + 2] Cycloaddition Reactions Involving Indene or Benzofurans and Arynes.

Bhojgude, S. S.; Thangaraj, M.; Suresh, E.; Biju, A. T.

Org. Lett. 2014, 16, 3576-3579. Link
48. Diels-Alder Reaction of Tropones with Arynes: Synthesis of Functionalized Benzobicyclo[3.2.2]nonatrienones.

Thangaraj, M.; Bhojgude, S. S.; Bisht, R. H.; Gonnade, R. G.; Biju, A. T.

J. Org. Chem. 2014, 79, 4757-4762. Link
47. Synthesis of Functionalized Coumarins and Quinolinones by NHC-Catalyzed Annulation of Modified Enals with Heterocyclic C-H Acids.

Yetra, S. R.; Roy, T.; Bhunia, A.; Porwal, D.; Biju, A. T. 

J. Org. Chem. 2014, 79, 4245-4251. Link
46. Practical Synthesis of Phthalimides and Benzamides by a Multicomponent Reaction Involving Arynes, Isocyanides, and CO2/H2O.

Kaicharla, T.; Thangaraj, M.; Biju, A. T.

Org. Lett. 2014, 16, 1728-1731. Link 

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/434.shtm

45. Efficient Synthesis of 9-Aryldihydrophenanthrenes by a Cascade Reaction Involving Arynes and Styrenes.

Bhojgude, S. S.; Bhunia, A.; Gonnade, R. G.; Biju ,A. T.

Org. Lett. 2014, 16, 676-679. Link
44. Employing Arynes in Transition-Metal-Free, N-Heterocycles Initiated Multicomponent Reactions.

Bhunia, A.; Biju, A. T.

Synlett. 2014, 25, 608-614. Link

Invited Synpacts Article

2013
43.  Employing Arynes in Transition-Metal-Free Monoarylation of Aromatic Tertiary Amines.

Bhojgude, S. S.; Kaicharla, T.; Biju, A. T.

Org. Lett. 2013, 15, 5452-5455. Link

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/224.shtm

42.  Asymmetric N-Heterocyclic Carbene (NHC)-Catalyzed Annulation of Modified Enals with Enolizable Aldehydes.

Yetra, S. R.; Kaicharla, T.; Kunte, S. S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2013, 15, 5202 – 5205. Link

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/202.shtm
41. Multicomponent Reactions Involving Arynes, Quinolines, and Aldehydes.

Bhunia, A.; Porwal, D.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2013, 15, 4620- 623. Link
40. Transition-Metal-Free Multicomponent Reactions Involving Arynes, N-Heterocycles and Isatins.

Bhunia, A.; Roy, T.; Pachfule, P.; Rajamohanan, P. R.; Biju, A. T. 

Angew. Chem. Int. Ed. 2013, 52, 10040-10043. Link

Among the most accessed papers in August 2013, Invited for Synpacts
39. Engaging isatins in solvent-free, sterically congested Passerini reaction.

Kaicharla, T.; Yetra, S. R.; Roy, T.; Biju, A. T.

Green Chem. 2013, 15, 1608-1614. Link
38. Enantioselective N-Heterocyclic Carbene-Catalyzed Annulations of 2-Bromoenals with 1,3-Dicarbonyl Compounds and Enamines via Chiral α,β-Unsaturated Acyl Azoliums.

Yetra, S. R.; Bhunia, A.; Patra, A.; Mane, M. V.; Vanka, K.; Biju, A. T. 

Adv. Synth. Catal. 2013, 335, 1089-1097. Link
37. NHC-Catalyzed Reaction of Enals with Hydroxy Chalcones:Diastereoselective Synthesis of Functionalized Coumarins.

Bhunia, A.; Patra, A.; Puranik, V.; Biju, A. T.   

Org. Lett. 2013, 15, 1756-759. Link

Highlighted in Synfacts 2013, 9, 670.

2012
36. Efficient Diels-Alder Reaction of 1,2-Benzoquinones with Arynes and Its Utility in One-Pot Reactions.

Kaicharla, T.; Bhojgude, S. S. ; Biju, A. T. 

Org. Lett. 2012, 14, 6238-6241. Link
35. A Practical and General Diels-Alder Reaction of Pentafulvenes with Arynes.

Bhojgude, S. S.; Kaicharla, T.; Bhunia, A.; Biju, A. T.   

Org. Lett. 2012, 14, 4098-4101. Link
34. Efficient Synthesis of γ-Keto Sulfones by NHC-Catalyzed Intermolecular Stetter Reaction.

Bhunia, A.; Yetra, S. R.; Bhojgude, S. S.; Biju, A. T. 

Org. Lett. 2012, 14, 2830-2833. Link
33. 1,2-Benzoquinones in Diels-Alder reactions, dipolar cycloadditions, nucleophilic additions, multicomponent reactions and more.

Nair, V.; Menon, R. S.; Biju, A. T.; Abhilash, K. G.  

Chem. Soc. Rev. 2012, 41, 1050-1059. Link
32. Arynes in Transition-Metal-Free Multicomponent Coupling Reactions.

Bhojgude, S. S.; Biju, A. T.    

Angew. Chem. Int. Ed. 2012, 51, 1520-1522. Link
31. Recent Advances in Transition-Metal-Free Carbon-Carbon and Carbon-Heteroatom Bond-Forming Reactions Using Arynes.

Bhunia, A.; Yetra, S. R.; Biju, A. T.    

Chem. Soc. Rev. 2012, 41, 3140-3152. Link

2011 and prior
30. Organocatalytic Asymmetric 1,6-Addition Reactions.

Biju, A. T.    

Chem. Cat. Chem. 2011, 3, 1847-1849. Link

29. Efficient Synthesis of Benzofuranones: N-Heterocyclic Carbene (NHC)/Base-Catalyzed Hydroacylation-Stetter-Rearrangement Cascade.

Padmanaban, M.; Biju, A. T.; Glorius, F.     

Org. Lett. 2011, 13, 5624- 5627. Link

28. Employing Homoenolates Generated by NHC Catalysis in Carbon-Carbon Bond-Forming Reactions: State of the Art.

Nair, V.; Menon, R. S.; Biju, A. T.; Sinu, C. R.; Paul, R. R.; Jose, A.; Sreekumar, V.    

Chem. Soc. Rev. 2011, 40, 5336-5346. Link

27. N-Heterocyclic Carbene (NHC)-Catalyzed Umpolung of Michael Acceptors for Intermolecular Reactions.

Biju, A. T.; Padmanaban, M.; Wurz, N. E.; Glorius, F.    

Angew. Chem., Int. Ed. 2011, 50, 8412-8415. Link

26. Extending NHC-Catalysis: Reaction of Aldehydes with Unconventional Reaction Partners.

Biju, A. T.; Kuhl, N. Glorius, F.    

Acc. Chem. Res. 2011, 44, 1182-1195. Link

25. Synthesis and Application of a Chiral Diborate.

Loewer, Y.; Weiß, C.; Biju, A. T.; Fröhlich, R.; Glorius. F.   

J. Org. Chem. 2011, 76, 2324-2327. Link

24. N-Heterocyclic Carbene-Catalyzed Cross-Coupling of Aromatic Aldehydes with Activated Alkyl Halides.

Padmanaban, M.; Biju, A. T.; Glorius, F.     

Org. Lett. 2011, 13, 98-101. Link

Highlighted in Synfacts 2011, 2, 209.

23. Intermolecular N-Heterocyclic Carbene-Catalyzed Hydroacylation of Arynes.

Biju, A. T.; Glorius, F.    

Angew. Chem., Int. Ed. 2010, 49, 9761-9764. Link

(This Communication is one of the most accessed papers in November 2010).

Selected as Hot Paper by Angewandte Chemie

This work has been Highlighted in Synfacts 2011, 1, 95.

22. N-Heterocyclic Carbene-Catalyzed Cascade Reaction Involving the Hydroacylation of Unactivated Alkynes.

Biju, A. T.; Wurz, N. E.; Glorius, F.    

J. Am. Chem. Soc. 2010, 132, 5970-5971. Link

(This Communication is one of the most accessed papers in April 2010).

Highlighted in Synfacts 2010, 6, 716.

21. Switching the Electron-Donor Properties of N-Heterocyclic Carbenes by a Facile Deprotonation Strategy. 

Biju, A. T.; Hirano, K.; Fröhlich, R.; Glorius, F.

Chem. Asian J. 2009, 4, 1786-1789. Link 

20. Copper-Catalyzed Synthesis of 2-Unsubstituted, N-Substituted Benzimidazoles. 

Hirano, K.; Biju, A. T.; Glorius, F.

J. Org. Chem. 2009, 74, 9570-9572. Link 

19. N-Heterocyclic Carbene-Catalyzed Hydroacylation of Unactivated Double Bonds. 

Hirano, K.†; Biju, A.T.† ; Piel, I.; Glorius, F.

J. Am. Chem. Soc. 2009, 131, 14190-14191. Link 

Highlighted in Synfacts 2009, 12, 1404.

18. Polymeric Ladderphanes. 

Chou, C.-M.; Lee, S.-L.; Chen, C.-H; Biju, A. T.; Wang, H.-W.; Wu, Y.-L.; Zhang, G.-F.; Yang, K.-W.; Lim, T.-S.; Huang, M.-J.; Tsai, P.-Y.; Lin, K.-C.; Huang, S.-L.; Chen, C.-h.; Luh, T.-Y.

J. Am. Chem. Soc. 2009, 131, 12579-12585. Link 

17. Reactions of Morita-Baylis-Hillman Acetates with Huisgen Zwitterions: A Novel Strategy for the Synthesis of β-Amino Acid Derivatives. 

Jose, A.; Paul, R. R.; Mohan, R.; Mathew, S. C.; Biju, A. T.; Suresh, E.; Nair, V.

Synthesis, 2009, 1829-1833. Link 

16. Carbon-Nitrogen Bond-Forming Reactions of Dialkyl Azodicarboxylate: A Promising Synthetic Strategy. 

Nair, V.; Biju, A. T.; Mathew, S. C.; Beneesh, P. B.

Chem. Asian J. 2008, 3, 810-820. Link 

15. Reaction of Huisgen Zwitterion with Diaryl Ketones Leading to the Facile Synthesis of Mono- and Bis(alkoxycarbonyl)hydrazones. 

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Synthesis 2008, 1078-1084. Link 

14. Reaction of TPP-Azodicarboxylate Zwitterions and Aldehydes: Unprecedented Synthesis of Acyl Carbamates.  

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Tetrahedron Lett. 2007,  48, 9018-9020. Link 

13. Efficient Higher-Order Cycloaddition Reactions of 8,8-Dicyanoheptafulvenes with Dienes.  

Nair, V.; Abhilash, K. G.; Biju, A. T.; Suresh, E.

Synthesis 2007,  1833-1836. Link 

12. Stereoselective Synthesis of 3,4-trans-Disubstituted γ-Lactams by Cerium(IV) Ammonium Nitrate Mediated Radical Cyclization of Cinnamamides.   

Nair, V.; Mohanan, K.; Suja, T. D.; Biju, A. T.

Synthesis 2007, 1179-1184. Link 

11. A Novel Reaction of the “Huisgen Zwitterion” with Chalcones and Dienones: An Efficient Strategy for the Synthesis of Pyrazoline and Pyrazolopyridazine Derivatives.   

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Angew. Chem. Int. Ed. 2007, 46, 2070-2073. Link 

Highlighted in Synfacts 2007, 577.

10. The Reaction of Huisgen Zwitterion with Diaryl-1,2-diones and Ketones: An Efficient Protocol for Carbon-Nitrogen Bond Formation.    

Nair, V.; Biju, A. T.; Mathew, S. C.

Synthesis 2007, 697-704. Link 

9. DMAP-Catalyzed Reaction of b-ketoesters and Dimethyl Acetylenedicarboxylate: An Efficient Synthesis of Polysubstituted Benzenes and Biaryls.   

Nair, V.; Vidya, N.; Biju, A. T.; Deepthi, A.; Abhilash, K. G.; Suresh, E.

Tetrahedron 2006, 62, 10136-10140. Link 

8. Engaging Zwitterions in Carbon-Carbon and Carbon-Nitrogen Bond- Forming Reactions: A Promising Synthetic Strategy.   

Nair, V.; Menon, R. S.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.

Acc. Chem. Res. 2006, 39, 520-530. Link 

7. Novel Synthesis of Highly Functionalized Pyrazolines and Pyrazoles by Triphenylphosphine Mediated Reaction of Dialkyl Azodicarboxylate with Allenic Esters.   

Nair, V.; Biju, A. T.; Mohanan, K.; Suresh, E.

Org. Lett. 2006, 8, 2213-2216. Link

6. Reaction of Huisgen Zwitterion with 1,2-Benzoquinones and Isatins: Expeditious Synthesis of Dihydro-1,2,3-Benzoxadiazoles and Spirooxadiazolines.

Nair, V.; Biju, A. T.; Vinod, A. U.; Suresh, E.

Org. Lett. 2005, 7, 5139.

5. Reaction of Diaryl-1,2-diones with Triphenylphosphine and Diethyl Azodicarboxylate Leading to N, N-Dicarboethoxy Monohydrazones via a Novel Rearrangement.

Nair, V.; Biju, A. T.; Abhilash, K. G.; Menon, R. S.; Suresh, E.

Org. Lett. 2005, 7, 2121.

4. 1,4-Dipolar Cycloaddition in Organic synthesis: A Facile Route to Isoquinoline Fused Heterocycles.

Nair, V.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.; Varma, L.; Viji, S.; Mathew, S.

ARKIVOC 2005, 9, 178.

3. One Pot Four Component Reaction of Isocyanides, Dimethyl Acetylenedicarboxylate and Cyclobutene-1,2-diones: Synthesis of Spiro heterocycles.

Nair, V.; Menon, R. S.; Deepthi, A.; Devi, B.R.; Biju, A. T.

Tetrahedron Lett. 2005, 46, 1337.

2. Novel Pyridine Catalyzed Reaction of Dimethyl Acetylenedicarboxylate with Carbonyl Compounds and N-Tosylimines: Efficient Synthesis of 2-Benzoyl Fumarates and 1-Azadienes.

Nair, V.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.; Remadevi, B.; Menon, R. S.; Rath, N. P.

Synthesis 2003, 1895.

1. The Reaction of Isoquinoline and Dimethyl Acetylenedicarboxylate with 1,2- and 1,4-diones : A Novel Synthesis of Spiro [1,3] oxazino [2,3-a] isoquinolines.

Nair, V.; Sreekanth, A. R.; Biju, A. T.; Rath, N. P.

Tetrahedron Lett. 2003, 44, 729.

 

2025
173. Access to C-N and N-N Axially Chiral Pyridinones via NHC-Catalyzed Dynamic Kinetic Resolution of Rotationally Restricted Cyclic Imides.

Ranganathappa, S. S.; Das, A.; Biju, A. T.

ChemRxiv. 2025, Preprint. Link 
172. Lewis Acid-Assisted Formal C═S Insertion of Thioindolinones to Bicyclobutanes: Diastereoselective Access to Trisubstituted Cyclobutanethiols.

Roy, P.; Deswal, S.; Biju, A. T.

Org. Lett. 2025, 27, 10916-10922. Link 
171. HFIP-Mediated Ring-Opening of Bicyclo[1.1.0]butanes with Hydroperoxides for the Diastereoselective Access to Peroxycyclobutanes.

Gupta, P.; Roy, P.; Biju, A. T.

Org. Lett. 2025, 27, 10477-10483. Link 
170. Ruthenium(II)-Catalyzed Annulation of Vinyl Sulfoxonium Ylides with Arynes for the Rapid Synthesis of Functionalized 1-Naphthols.

Shrotriya, S.; Paravakkal, F. D.; Biju, A. T.

Org. Lett. 2025, 27, 8131-8136. Link 
169. HFIP-Mediated Spiro-annulation of Bicyclo[1.1.0]butanes with α-Halo Hydroxamates: Access to Functionalized Spirocyclobutenes.

Shajahan, S.; Deswal, S.; George, M.; Ahmad, M.; Mohanan, K.; Werz, D. B.; Biju, A. T.

Org. Lett. 2025, 27, 8137-8143. Link Highlighted in Synfacts 2025, 21, 985.  Link
168. Dynamic Kinetic Resolution Approach to C-O Axially Chiral Benzonitriles via NHC-Catalyzed Atroposelective Imine Umpolung.

Shee, S.; Ramachandran, D.; Gogoi, R.; Biju, A. T.

ACS Catal. 2025, 15, 13157-13166. Link ; ChemRxiv. 2025, Preprint. Link. Highlighted in Synfacts 2025, 21, 1049.  Link
167. Control Over S(VI)-Stereogenic Center: NHC-Catalyzed Enantioselective Synthesis of N-Acyl Cyclic Sulfonimidamides.

Barik, S.; Paravakkal, F. D.; Gupta, P.; Roy, P.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202506929. Link ; ChemRxiv. 2025, Preprint. Link. This article appears in ‘HOT Topic’: Organocatalysis Link
166. Simultaneous Activation of Bicyclobutanes and Indolyl Alcohols with HFIP: Access to Indole-Fused Bicyclo[3.1.1]heptanes.

Deswal, S.; Das, R. C.; Sarkar, D.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202501655. Link ; ChemRxiv. 2025, Preprint. Link. 
165. N-Heterocyclic-Carbene-Catalyzed Imine Umpolung for the Cross-Coupling of Quinoxalin-2-ones with Isatins.

Barik, S.; Kunhiraman, A. A.; Das, R. C.; Biju, A. T.

JACS Au 2025, 5, 948-954. Link 
164. Lewis Acid-Catalyzed 1,3-Dipolar Cycloaddition of Bicyclobutanes with Isatogens: Access to Indoxyl-Fused Bicyclo[3.1.1]heptanes.

Deswal, S.; Das, R. C.; Sarkar, D.; Biju, A. T.

JACS Au 2025, 5, 136-143. Link ; ChemRxiv. 2024, Preprint. Link. 
163. N-Heterocyclic Carbene (NHC) Organocatalysis: From Fundamentals to Frontiers.

Chakraborty, S.; Barik, S.; Biju, A. T.

Chem. Soc. Rev. 2025, 54, 1102-1124. Link. 
162. Electroredox N-Heterocyclic Carbene-Catalyzed Enantioselective (3+3) Annulation of Enals with 2-Naphthols.

Kale, V.; Shee, S.; Dutt, S.; Sinha, N.; Biju, A. T.; Banerjee, P.

Org. Lett. 2025, 27, 57-62. Link ; ChemRxiv. 2024, Preprint. Link
161. NHC-Catalyzed Aldimine Umpolung/6π-Electrocyclization Cascade to Access Tetracyclic Dihydrochromeno Indoles.

Das, R. C.; Gupta, P.; Chakraborty, S.; Jindal, G.; Biju, A. T.

Angew. Chem. Int. Ed. 2025, 64, e202416519. Link ;This article appears in ‘HOT Topic’: Organocatalysis Link

2024
160. Access to b-Keto Amino Acid Derivatives via Interrupted Polonovski Strategy Involving NHC-Catalyzed Aza Benzoin Reaction.

Dehury, B. S.; Barik, S.; Sankar, G.; Biju, A. T.

Org. Lett. 2024, 26, 10690-10695. Link. Highlighted in Synfacts 2025, 21, 318.  Link
159. Birth of Organocatalysis by N-Heterocyclic Carbenes.

Chakraborty, S.; Biju, A. T.

Nat. Catal. 2024, 7, 1060-1062. Link. Invited Retro News & Views
158. Lewis Acid-Catalyzed (3+2) Annulation of Bicyclobutanes with Ynamides: Access to 2-Amino Bicyclo[2.1.1]hexenes.

Sarkar, D.; Deswal, S.; Das, R. C.; Biju, A. T.

Chem. Sci. 2024, 15, 16243-16249. Link. 
157. Lewis Acid-Catalyzed Unusual (4+3) Annulation of para-Quinone Methides with Bicyclobutanes: Access to Oxabicyclo [4.1.1]octanes.

Deswal, S.; Guin, A.; Biju, A. T.

Angew. Chem. Int. Ed. 2024, 63, e202408610. Link; ChemRxiv. 2024, Preprint. Link. 
156. N-Heterocyclic Carbene-Catalyzed Atroposelective Synthesis of N-Aryl Phthalimides and Maleimides via Activation of Carboxylic Acids.

Barik, S.; Ranganathappa, S. S.; Biju, A. T.

Nat. Commun. 2024, 15, 5755. Link ; ChemRxiv. 2024, Preprint. Link
155. Lewis Acid-Catalyzed Diastereoselective Formal Ene Reaction of Thioindolinones/Thiolactams with Bicyclobutanes.

Guin, A.; Deswal, S.; Harariya, M. S.; Biju, A. T.

Chem. Sci. 2024, 15, 12473-12479. Link ; ChemRxiv. 2024, Preprint. Link
154. Atroposelective Synthesis of N–N Axially Chiral Indoles and Pyrroles via NHC-Catalyzed Diastereoselective (3 + 3) Annulation Strategy.

Ranganathappa, S. S.; Dehury, B, S.; Singh, G. K.; Shee, S.; Biju, A. T.

ACS Catal. 2024, 14, 6965-6972. Link. 
153. N-Heterocyclic Carbene-Catalyzed Imine Umpolung/Semipinacol Rearrangement Cascade for the Synthesis of Indoxyls.

Das, R. C.; Barik, S.; Kunhiraman, A. A.; Goswami, A.; Mondal, A.; De, M.; Biju, A. T.

ACS Catal. 2024, 14, 4202-4210. Link. 
152. Enantioselective Synthesis of Tricyclic Oxoquinolines via NHC-Catalyzed Michael-Aldol-Lactamization-Dehydration Cascade.

Barik, S.; Sankar, G.; Biju, A. T.

Chem. Commun. 2024, 60, 4290-4293. Link. Featured as the Cover Page of the issue in Chem. Commun.
151. Lewis Acid-Catalyzed One-Pot Thioalkenylation of Donor-Acceptor Cyclopropanes Using in situ Generated Dithiocarbamates and Propiolates.

Harikumar, S.; Kandy, L. T. K.; Guin, A.; Biju, A. T.

Org. Biomol. Chem. 2024, 22, 1834-1838. Link. Invited to the special issue celebrating the 100th birthday of Prof. Sukh Dev.

150. Stereoselective Alder-ene Reactions of Bicyclo[1.1.0]butanes: Facile Synthesis of Cyclopropyl- and Aryl-substituted Cyclobutenes.

Dasgupta, A.; Bhattacharjee, S.; Tong, Z.; Guin, A.; McNamee, R.; Christensen, K.; Biju, A. T.; Anderson, E.

J. Am. Chem. Soc. 2024, 146, 1196-1203. Link; ChemRxiv. 2023, Preprint. Link
149. Ring-Opening 1,3-Difunctionalization of Donor-Acceptor Cyclopropanes.

Guin, A.; Biju, A. T.

In “Donor-Acceptor Cyclopropanes in Organic Synthesis“, Chapter 5, Editors: P. Banerjee and A. T. Biju; Wiley-VCH. 2024, ISBN: 978-3-527-349876, Pages 167-190. Link

2023
148. Enantioselective Synthesis of C-O Axially Chiral Diaryl Ethers via NHC-Catalyzed Atroposelective Desymmetrization.

Shee, S.; Ranganathappa, S. S.; Gadhave, M. S.; Gogoi, R.; Biju, A. T.

Angew. Chem. Int. Ed. 2023, 62, e202311709. Link; ChemRxiv. 2023, Preprint. Link

This article appears in ‘HOT Topic’: Organocatalysis Link
147. Nucleophilic Acylation-Annulation Cascade of 2-Chlorobenzonitriles using Aldehydes Triggered by N-Heterocyclic Carbenes.

Gadhave, M. S.; Barik, S.; Wessels, F.; Biju, A. T.

Org. Lett. 2023, 25, 8314-8319. Link
146. NHC-Catalyzed Enantioselective Synthesis of Tetracyclic δ-Lactones by (4 + 2) Annulation of ortho-Quinodimethanes with Activated Ketones.

Sarkar, D.; Barik, S.; Shee, S.; Biju, A. T.

Org. Lett. 2023, 25, 7852–7857. Link
145. N-Heterocyclic Carbene-Catalyzed Atroposelective Synthesis of N-N  Axially Chiral 3-Amino Quinazolinones.

Balanna, K.; Barik, S.; Barik, S.; Shee, S.; Manoj, N.; Gonnade, R. G.; Biju, A. T.

ACS Catal. 2023, 13, 8752-8759. Link

ChemRxiv. 2023, Preprint. Link
144. Lewis Acid-Catalyzed Diastereoselective Carbofunctionalization of Bicyclobutanes Employing Naphthols.

Guin, A.; Bhattacharjee, S.; Harariya, M. S.; Biju, A. T.

Chem. Sci. 2023, 14, 6585-6591. Link
143. Benzotriazole-Triggered Three-Component Lewis Acid-Catalyzed Ring-Opening 1,3-Aminofunctionalization of Donor-Acceptor Cyclopropanes.

Deswal, S.; Guin, A.; Biju, A. T.

Org. Lett. 2023, 25, 1643-1648. Link
142. Directing Group-Free Regioselective meta-C-H Functionalization of Pyridines.

Chakraborty, S.; Biju, A. T.

Angew. Chem. Int. Ed. 2023, 62, e202300049. Link
141. N-Heterocyclic Carbene-Catalyzed aza-Michael-Mannich-Lactamization Cascade for the Enantioselective Synthesis of Pyrazoloquinolin-3-ones.

Shee, S.; Sarkar, D.; Biju, A. T.

Org. Lett. 2023, 25, 220-225. Link

2022
140. Enantioselective Synthesis of Dihydrothiopyranones via NHC-Catalyzed [3 + 3] Annulation of 2-Bromoenals with β-Oxodithioesters.

Barik, S.; Shee, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2022, 24, 8848-8853. Link
139. Dynamic Kinetic Resolution of γ,γ-Disubstituted Indole 2-Carboxaldehydes via NHC-Lewis Acid Cooperative Catalysis for the Synthesis of Tetracyclic ε-Lactones.

Balanna, K.; Barik, S.; Shee, S.; Gonnade, R. G.; Biju, A. T.

Chem. Sci. 2022, 13, 11513-11518. Link

Among the 2022 Chem.Sci. Pick of the Week Collection and 2022 Chem. Sci. HOT Article Collection
138. N-Heterocyclic Carbene-Catalyzed Umpolung of Cyclopent-4-ene-1,3-diones for Activated Olefin–Isatin Cross-Coupling.

Barik, S.; Shee, S.; Biju, A. T.

Org. Lett. 2022, 24, 6066-6071. Link 
137. Kinetic Resolution Approach to the Synthesis of C-N Axially Chiral N-Aryl Aminomaleimides via NHC-Catalyzed [3+3] Annulation.

Barik, S.; Das, R. C.; Balanna, K.; Biju, A. T.

Org. Lett. 2022, 24, 5456-5461. Link 
136. Synthesis of Trisubstituted Oxazoles via Aryne Induced [2,3] Sigmatropic Rearrangement-Annulation Cascade.

Gaykar, R. N.; Deswal, S.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2022, 24, 4145-4150. Link 
135. N-Heterocyclic Carbene (NHC)-Catalyzed Transformations Involving Azolium Enolates.

Mondal, A.; Ghosh, A.; Biju, A. T.

Chem. Rec. 2022, 22, e202200054. Link 
134. Ring-Opening 1,3-Carbothiolation of Donor-Acceptor Cyclopropanes Using Alkyl Halides and in Situ Generated Dithiocarbamates.

Guin, A.; Deswal, S.; Biju, A. T.

J. Org. Chem. 2022, 87, 6504-6513. Link
133. A Benzannulation Strategy for Rapid Access to Quinazoline-2,4-diones via Oxidative N-Heterocyclic Carbene Catalysis.

Ghosh, A.; Shee, S.; Biju, A. T.

Org. Lett. 2022, 24, 2772-2777. Link
132. Organocatalytic Routes to C-H Functionalization Reactions.

Barik, S.; Biju, A. T.

In “Handbook of C-H Functionalization (CHF)“, Editor: D. Maiti 

Wiley-VCH, 2022, In Press. Link
131. Organocatalytic Umpolung Strategies – Beyond Classical Reactivity Patterns.

Shee, S.; Ghosh, A.; Biju, A. T.

In “Asymmetric Organocatalysis: New Strategies, and Opportunities“, Chapter 22, Editors: L. Albrecht, A. Albrecht, L. Dell’Amico 

Wiley-VCH, 2022, In Press. Link
130. Molecular Rearrangements.

Guin, A.; Deswal, S.; Biju, A. T.

In “Comprehensive Aryne Synthetic Chemistry“, Chapter 3-4, Editor: H. Yoshida 

Elsevier, 2022, Pages 223-266. Link

2021
129. Aryne Three-Component Coupling Involving CS2 for the Synthesis of S-Aryl Dithiocarbamates.

Bhattacharjee, S.; Deswal, S.; Manoj, N.; Jindal, G.; Biju, A. T.

Org. Lett. 2021, 23, 9083-9088. Link
128. Synthesis of Functionalized Dihydrocoumarins by NHC-Catalyzed [3+3] Annulation of Enals with 2-Substituted Naphthoquinones.

Shee, S.; Barik, S.; Ghosh, A.; Biju, A. T.

Org. Lett. 2021, 23, 8039-8044. Link
127. Three-Component, Diastereoselective [6+3] Annulation of Tropone, Imino Esters and Arynes.

Guin, A.; Gaykar, R. N.; Deswal, S.; Biju, A. T.

Org. Lett. 2021, 23, 7456-7461. Link
126. Transition-Metal-Free C2-Functionalization of Pyridines through Aryne Three-Component Coupling.

Guin, A.; Bhattacharjee, S.; Biju, A. T.

Chem. Eur. J. 2021, 27, 13864-13869. Link

Selected as a “Hot Paper” by the Editors
125. Enantioselective Synthesis of Tetra-substituted Tetralines and Tetra-hydroindolizines via NHC-Catalyzed Azolium-Enolate Cascade.

Ghosh, A.; Barik, S.; Shee, S.; Biju, A. T.

Chem. Commun. 2021, 57, 7794-7797. Link
124. Oxidative N-Heterocyclic Carbene (NHC) Catalysis for the Rapid Access to Functionalized Pyrrolo-oxazinones.

Ghosh, A.; Barik, S.; Barik, S.; Shee, S.; Biju, A. T.

Tetrahedron. 2021, 94, 132330. Link

Invited to the Special issue on System-Oriented Development of Organocatalysis. For details, see: Link
123. Enantioselective Synthesis of 5,6-Dihydroindolizines by N-Heterocyclic Carbene (NHC)-Catalyzed Core-Structure-Inspired Strategy of Azolium Enolate Cascade.

Ghosh, A.; Shee, S.; Barik, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2021, 23, 5223-5228. Link
122. An Umpolung Oxa-[2,3] Sigmatropic Rearrangement Employing Arynes for the Synthesis of Functionalized Enol Ethers.

Gaykar, R. N.; George, M.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2021, 23, 3447-3452. Link
121. NHC-Catalyzed Desymmetrization of N-Aryl Maleimides Leading to the Atroposelective Synthesis of N-Aryl Succinimides.

Barik, S.; Shee, S.; Das, S.; Gonnade, R. G.; Jindal, G.; Mukherjee, S.; Biju, A. T.

Angew. Chem. Int. Ed. 2021, 60, 12264-12268. Link

This article appears in ‘HOT Topic’: Organocatalysis Link; Highlighted in Synfacts 2021, 17, 691.  Link
120. Revealing the Similarities of α,β-Unsaturated Iminiums and Acylazoliums in Organocatalysis.

Ghosh, A.; Biju, A. T.

Angew. Chem. Int. Ed. 2021, 60, 13712-13724. Link 

This article appears in ‘HOT Topic’: Organocatalysis Link
119. Hetarynes, Cycloalkynes and Related Intermediates.

Guin, A.; Bhattacherjee, S.; Biju, A. T.

In “Modern Aryne Chemistry“, Chapter 9, Editor: A. T. Biju; Wiley-VCH. 2021, ISBN: 978-3-527-34646-2, pages 359-406. Link
118. An Introduction to the Chemistry of Arynes.

Roy, T.; Guin, A.; Biju, A. T.

In “Modern Aryne Chemistry“, Chapter 1, Editor: A. T. Biju; Wiley-VCH. 2021, ISBN: 978-3-527-34646-2, pages 1-25. Link
117. Employing Arynes in Transition-metal-free synthesis of benzo-fused five- and six-membered heterocycles: An Update.

Roy, T.; Biju, A. T. 

In “Green Synthetic Approaches for Biologically Relevant Heterocycles“, Chapter 11, Editor: G. Brahmachari; 

Elsevier Science, 2021, 355-382. Link

2020
116. N-Heterocyclic Carbene (NHC) Organocatalysis Using Aliphatic Aldehydes.

Barik, S.; Biju, A. T.

Chem. Commun. 2020, 56, 15484-15495. Link
115. Thiophenols as Protic Nucleophilic Triggers in Aryne Three-Component Coupling.

Bhattacherjee, S.; Guin, A.; Gaykar, R. N.; Biju, A. T.

Org. Lett. 2020, 22, 9097-9101. Link
114. Enantioselective Synthesis of Tricyclic β‑Lactones by NHC-Catalyzed Desymmetrization of Cyclic 1,3-Diketones.

Shee, S.; Mukherjee, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2020, 22, 5407-5411. Link

Highlighted in Organic Chemistry Portal Link
113. Imines as Acceptors and Donors in N-Heterocyclic Carbene (NHC) Organocatalysis.

Das, T. K.; Biju, A. T.

Chem. Commun. 2020, 56, 8537-8552. Link

Selected as a “HOT Article” by Editor & Referees of Chem. Commun. Link
112. Rapid Synthesis of Zwitterionic Phosphonium Benzoates by a Three‐Component Coupling Involving Phosphines, Arynes and CO2.

Bhattacharjee, S.; Raju, A.; Gaykar, R. N.; Gonnade, R. G.; Roy, T.; Biju, A. T.

Chem. Asian J. 2020, 15, 2203-2207. Link

This article appears in ‘HOT Topic’: Carbon Dioxide Link
111. Catalytic, Enantioselective C2-Functionalization of 3-Aminobenzofurans Using N-Heterocyclic Carbenes.

Barik, S.; Shee, S.; Ghosh, A.; Biju, A. T.

Org. Lett. 2020, 22, 3865-3869. Link

110. N-Heterocyclic Carbene Catalysis Exploiting Oxidative Imine Umpolung for the Generation of Imidoyl Azoliums.

Das, T. K.; Madica, K.; Krishnan, J.; Marelli, U. K.; Biju, A. T.

J. Org. Chem. 2020, 85, 5114-5121. Link
109. Lewis Acid-Catalyzed Ring-Opening 1,3-Aminothiolation of Donor-Acceptor Cyclopropanes Using Sulfenamides.

Guin, A.; Rathod, T.; Gaykar, R. N.; Roy, T.; Biju, A. T.

Org. Lett. 2020, 22, 2276-2280. Link
108. N-Heterocyclic Carbene-Catalyzed Formal [6+2] Annulation Reaction via Cross-Conjugated Aza-Trienolate Intermediates.

Balanna, K.; Madica, K.; Mukherjee, S.; Ghosh, A.; Poisson, T.; Besset, T.; Jindal, G.; Biju, A. T.

Chem. Eur. J. 2020, 26, 818-822. Link

This article appears in ‘HOT Topic’: Organocatalysis Link
107. Uncovering the Neglected Similarities of Arynes and Donor-Acceptor Cyclopropanes.

Werz, D. B.; Biju, A. T.

Angew. Chem. Int. Ed. 2020, 59, 3385-3398. Link

2019
106. Three-Component Aminoselenation of Arynes.

Gaykar, R. N.; Guin, A.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2019, 21, 9613-9617. Link
105. NHC-Catalyzed [3 + 3] Annulation of Thioamides and Modified Enals for the Enantioselective Synthesis of Functionalized Thiazinones.

Ghosh, A.; Barik, S.; Biju, A. T.

Org. Lett. 2019, 21, 8598-8602. Link
104. [8+3]-Cycloaddition of Tropones with Azaoxyallyl Cations.

Roy, T.; Jacob, A.; Bhattacharjee, S.; Biju, A. T.

Chem. Asian. J. 2019, 14, 4748-4753. Link

Invited to the Special Issue celebrating the 20th Anniversary of the Chemical Research Society of India (CRSI) 
103. Selective Synthesis of N-H and N-Aryl Benzotriazoles by the [3+2] Annulation of Sodium Azide with Arynes.

Guin, A.; Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

J. Org. Chem. 2019, 84, 12692-12699. Link

102. N-Heterocyclic Carbene (NHC)-Catalyzed Transformations for the Synthesis of Heterocycles.

Das, T. K.; Biju, A. T.

Progress in Heterocyclic Chemistry 2019, 31, Pages 1-82; Chapter 1, Editors: G. Gribble, J. Joule; ISBN: 9780128199626. Link

101. Iodide as a Nucleophilic Trigger in Aryne Three-Component Coupling for the Synthesis of 2-Iodobenzyl Alcohols.

Bhattacharjee, S.; Guin, A.; Gaykar, R. N.; Biju, A. T.

Org. Lett. 2019, 21, 4383-4387. Link

Highlighted in Organic Chemistry Portal 
100. N-Heterocyclic Carbene-Catalyzed Umpolung of Imines for the Enantioselective Synthesis of Dihydroquinoxalines.

Das, T. K.; Ghosh, A.; Balanna, K.; Behera, P.; Gonnade, R. G.; Marelli, U. K.; Das, A. K.; Biju, A. T.

ACS Catal. 2019, 9, 4065-4071. Link

Highlighted in Org. Chem. Front. 2019, 6, 3821. Link
99. The aryne Sommelet-Hauser rearrangement.

Roy, T.; Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

Chem. Commun. 2019, 55, 3004-3007. Link

98. NHC-Catalyzed Generation of α,β-Unsaturated Acylazoliums for the Enantioselective Synthesis of Heterocycles and Carbocycles.

Mondal, S.; Yetra, S. R.; Mukherjee, S.; Biju, A. T.

Acc. Chem. Res. 2019, 52, 425-436. Link

97. Transition-Metal-Free Thioamination of Arynes Using Sulfenamides.

Gaykar, R. N.; Bhattacharjee, S.; Biju, A. T.

Org. Lett. 2019, 21, 737-740. Link

96. Synthesis of 2-Aryl Naphthoquinones by the Cross-Dehydrogenative Coupling Involving NHC-Catalyzed endo-Stetter Reaction.

Ghosh, A.; Patra, A.; Mukherjee, S.; Biju, A. T.

J. Org. Chem. 2019, 84, 1103-1110. Link

95. N-Heterocyclic Carbene-Catalyzed Stetter Reaction and Related Chemistry.

Mondal, S.; Yetra, S. R.; Biju, A. T.

In “N-Heterocyclic Carbenes in Organocatalysis“, Chapter 4, Editor: A. T. Biju

Wiley-VCH, 2019, ISBN: 978-3-527-34310-2, pages 53-93. Link

2018
94. Enantioselective N-Heterocyclic Carbene-Catalyzed Cascade Reaction for the Synthesis of Pyrroloquinolines via N–H Functionalization of Indoles.

Mukherjee, S.; Shee, S.; Poisson, T.; Besset, T.; Biju, A. T.

Org. Lett. 2018, 20, 6998-7002. Link

93. Oxidative NHC-Catalysis for the Generation of Imidoyl Azoliums: Synthesis of Benzoxazoles.

Patra, A.; James, A.; Das, T. K.; Biju, A. T.

J. Org. Chem. 2018, 83, 14820-14826. Link

92. N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Spiro-glutarimides via α,β-Unsaturated Acylazoliums.

Mondal, S.; Ghosh, A.; Mukherjee, S.; Biju, A. T.

Org. Lett. 2018, 20, 4499-4503. Link

91. Recent Advances in Organocatalytic Enantioselective Synthesis of Functionalized β-Lactones.

Mukherjee, S.; Biju, A. T.

Chem. Asian J. 2018, 13, 2333-2349. Link

Invited to the special issue on Homogeneous Catalysis from Young Investigators in Asia
90. Employing Arynes for the Generation of Aryl Anion Equivalents and Subsequent Reaction with Aldehydes.

Gaykar, R. N.; Bhunia, A.; Biju, A. T.

J. Org. Chem. 2018, 83, 11333-11340. Link

89. N-Heterocyclic Carbene-Catalyzed Synthesis of α-Trifluoromethyl Esters.

Gelat, F.; Patra, A.; Pannecoucke, X.; Biju, A. T.; Poisson, T.; Besset, T.

Org. Lett. 2018, 20, 3897-3901. Link

88. Trifluoromethylthiolation of α‐Chloroaldehydes: Access to Quaternary SCF3‐Containing Centers.

Gelat, F.; Poisson, T.; Biju, A. T.; Pannecoucke, X.; Besset, T.

Eur. J. Org. Chem. 2018, 3693-3696. Link

87. N-Heterocyclic Carbene-Catalyzed Michael–Michael–Lactonization Cascade for the Enantioselective Synthesis of Tricyclic δ-Lactones.

Mukherjee, S.; Ghosh, A.; Marelli, U. K.; Biju, A. T.

Org. Lett. 2018, 20, 2952-2955. Link

86. Recent Advances in Molecular Rearrangements Involving Aryne Intermediates.

Roy, T.; Biju, A. T.

Chem. Commun. 2018, 54, 2580-2594. Link

85. Synthesis of 4-Difluoromethylquinolines by NHC-Catalyzed Umpolung of Imines.

Patra, A.; Gelat, F.; Pannecoucke, X.; Poisson, T.; Besset. T.; Biju, A. T.

Org. Lett. 2018, 20, 1086-1089. Link

2017
84. Base-Free and Catalyst-Free Synthesis of Functionalized Dihydrobenzoxazoles via Vinylogous Carbonate to Carbamate Rearrangement.

Das, T. K.; Mondal, S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2017, 19, 5597-5600. Link

83. Metal-Free, Brønsted Acid-Catalyzed Formal [3+2] Annulation of Quinone Monoacetals with 2-Naphthols.

Jacob, A.; Roy, T.; Kaicharla, T.; Biju, A. T.

J. Org. Chem. 2017, 82, 11269–11274. Link

82. Enantioselective Synthesis of Functionalized β-Lactones by NHC-Catalyzed Aldol Lactonization of Ketoacids.

Mondal, S.; Mukherjee, S.; Das, T. K.; Gonnade, R. G.; Biju, A. T.

J. Org. Chem. 2017, 82, 9223-9228. Link

81. Organocatalytic Enantioselective Vinylogous Michael-Aldol Cascade for the Synthesis of Spirocyclic Compounds.

Mondal, S.; Mukherjee, S.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T. 

Org. Lett. 2017, 19, 4367–4370. Link

80. A Method for the Analysis of Free Carbenes Present after the NHC-Organocatalytic Transformation.

Das, T. K.; Biju, A. T.

Eur. J. Org. Chem. 2017, 4500-4506. Link

Invited to the special issue featuring articles by emerging investigators from India
79. AgOTf-Catalyzed Dehydrative [3+2] Annulation of Aziridines with 2-Naphthols.

Kaicharla, T.; Jacob, A.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2017, 53, 8219-8222. Link 
78. N-Heterocyclic Carbene-Catalyzed Aldol-Lactonization of Ketoacids via Dynamic Kinetic Resolution.

Mondal, S.; Mukherjee, S.; Das, T. K.; Gonnade, R. G.; Biju, A. T. 

ACS. Catal. 2017, 7, 3995-3999. Link 

Highlighted in Organic Chemistry Portal 
77. Synthesis of Functionalized Beta-Keto Arylthioethers by the Aryne Induced [2,3] Stevens Rearrangement of Allylthioethers.

Thangaraj, M.; Gaykar, R. N.; Roy, T.; Biju, A. T.   

J. Org. Chem. 2017, 82, 4470–4476. Link 

Highlighted in Synfacts 2017, 13, 643 
76.  Enantioselective Synthesis of Spiro Gamma-butyrolactones by N-Heterocyclic Carbene (NHC)-Catalyzed Formal [3+2] Annulation of Enals with 3-Hydroxy Oxindoles.

Mukherjee, S.; Joseph, S.; Bhunia, A.; Gonnade, R. G.; Yetra, S. R.; Biju, A. T. 

Org. Biomol. Chem. 2017, 16, 2013-2019. Link 
75. N-Heterocyclic Carbene-Catalyzed Umpolung of Imines

Patra, A.; Mukherjee, S.; Das, T. K.; Jain, S.; Gonnade, R. G.; Biju, A. T.   

Angew. Chem. Int. Ed. 2017, 56, 2730- 2734. Link 

Highlighted in Synfacts 2017, 13, 466; Highlighted in Organic Chemistry Portal 
74.  Facile Synthesis of N-Acyl 2-Aminobenzothiazoles by NHC-Catalyzed Direct Oxidative Amidation of Aldehydes.

Premaletha, S.; Ghosh, A.; Joseph, S.; Yetra, S. R.; Biju, A. T.,  

Chem. Commun. 2017, 53, 1478-1481. Link 

2016
73.  The Aryne [2,3] Stevens Rearrangement.

Roy, T.; Thangaraj, M.; Kaicharla, T.; Kamath, R. V.; Gonnade, R. G.; Biju, A. T.   

Org. Lett. 2016, 18, 5428 – 5431 . Link 
72. Substrate-Controlled Selectivity Switch in the Three-Component Coupling Involving Arynes, Aromatic Tertiary Amines, and CO2.

Bhojgude, S. S.; Roy, T.; Gonnade, R. G.; Biju, A. T.    

Org. Lett. 2016, 18, 5424–5427. Link 
71. Employing Arynes in Diels-Alder Reactions and Transition-Metal-Free Multicomponent Coupling and Arylation Reactions.

Bhojgude, S. S.; Bhunia, A.; Biju, A. T.,    

Acc. Chem. Res. 2016, 49, 1658–1670. Link 
70. Selective Synthesis of N-Unsubstituted and N-Aryl Indoles by the Reaction of Arynes with Azirines.

Thangaraj, M.; Bhojgude, S. S.; Jain, S.; Biju, A. T.

J. Org. Chem. 2016, 81, 8604–8611. Link 
69. Lewis Acid Catalyzed Selective Reactions of Donor–Acceptor Cyclopropanes with 2-Naphthols.

Kaicharla, T.; Roy, T.; Thangaraj, M.; Gonnade, R. G.; Biju, A. T.

Angew. Chem. Int. Ed. 2016, 55, 10061-10064. Link 

68. Synthesis of 4H-chromenes by an unexpected, K3PO4-mediated intramolecular Rauhut-Currier type reaction.

Bhunia, A.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T. 

Org. Biomol. Chem. 2016, 15, 5612-5616 . Link 

Invited to the “New Talent” Themed Collection of OBC
67. Synthesis of functionalized amino epoxides by a three-component coupling involving aziridines, arynes and aldehydes.

Roy, T.; Thangaraj, M.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2016, 52, 9044-9047. Link 

Selected for the “Emerging Investigators-2016” themed issue of Chem. Commun.
66. Recent Advances in N-Heterocyclic Carbene (NHC)-Catalysed Benzoin Reactions.

Menon, R. S.; Biju, A. T.; Nair, V.*

Beilstein J. Org. Chem. 2016, 12, 444-461. Link
65. From Insertion to Multicomponent Coupling: Temperature Dependent Reactions of Arynes with Aliphatic Alcohols.

Thangaraj, M.; Bhojgude, S. S.; Mane, M. V.; Biju, A. T.

Chem. Commun. 2016, 52, 1665-1668 . Link
64. Employing Carboxylic Acids in Aryne Multicomponent Coupling Triggered by Aziridines/Azetidines.

Roy, T.; Bhojgude, S. S.; Kaicharla, T.; Thangaraj, M.; Garai, B.; Biju, A. T.

Org. Chem. Front. 2016, 3, 71-76. Link 

2015 “Emerging Investigators” themed collection of OCF
63. Enantioselective Synthesis of Spirocyclohexadienones by NHC-Catalyzed Formal [3+3] Annulation Reaction of Enals.

Yetra, S. R.; Mondal, S.; Mukherjee, S.; Gonnade, R. G.; Biju, A. T. 

Angew. Chem. Int. Ed. 2016, 55, 268-272. Link

2015
62. Three-Component Coupling Involving Arynes, Aromatic Tertiary Amines, and Aldehydes via Aryl–Aryl Amino Group Migration.

Bhojgude, S. S.; Baviskar, D. R.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2015, 17, 6270–6273. Link
61. Diastereoselective Synthesis of Cyclopentanone-fused Spirooxindoles by N-Heterocyclic Carbene-Catalyzed Homoenolate Annulation with Isatilidenes.

Patra, A.; Bhunia, A.; Yetra, S. R.; Gonnade, R. G.; Biju, A. T.

Org. Chem. Front. 2015, 2, 1584-1588. Link

Invited to the “Carbenes for Today” themed collection of OCF 
60. Synthesis of N-Aryl β-Amino Alcohols by Trifluoroacetic Acid-Promoted Multicomponent Coupling of Aziridines, Arynes and Water.

Roy, T.; Baviskar, D. R.; Biju, A. T. 

J. Org. Chem. 2015, 80, 11131-11137. Link
59. Reaction of N-Heterocyclic Carbenes with Chalcones Leading to the Synthesis of deoxy-Breslow Intermediates in their Oxidized Form.

Bhunia, A.; Thorat, S.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2015, 51, 13690-13693. Link
58. Recent Advances in Employing Homoenolates Generated by N-Heterocyclic Carbene (NHC) Catalysis in Carbon–Carbon Bond-Forming Reactions.

Menon, R. S.; Biju, A. T.; Nair, V.*

Chem. Soc. Rev. 2015, 44, 5040-5052. Link
57. N-Heterocyclic Carbene-Catalyzed Diastereoselective Synthesis of β-lactone-fused Cyclopentanes Using Homoenolate Annulation Reaction.

Mukherjee, S.; Mondal, S.; Patra, A.; Gonnade, R. G.; Biju, A. T.

Chem. Commun. 2015, 51, 9559-9562. Link

Highlighted in Organic Chemistry Portal

56. Enantioselective Synthesis of Functionalized Pyrazoles by NHC-Catalyzed Reaction of Pyrazolones with α,β-Unsaturated Aldehydes.

Yetra, S. R.; Mondal, S.; Suresh, E.; Biju, A. T.

Org. Lett. 2015, 17, 1417-1420. Link
55. Recent Advances in the N-Heterocyclic Carbene (NHC)-Organocatalyzed Stetter Reaction and Related Chemistry.

Yetra, S. R.; Patra, A.; Biju, A. T. 

Synthesis 2015, 47, 1357-1378. Link

Invited Review; Top 10 most popular articles in April 2015

2014
54. N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Functionalized Cyclopentenes via α,β-Unsaturated Acyl Azoliums.

Mondal, S.; Yetra, S. R.; Patra, A.; Kunte, S. S.; Gonnade ,R. G.; Biju, A. T.

Chem. Commun. 2014, 50, 14539-14542. Link

Highlighted in Organic Chemistry Portal

53. Rapid Access to Benzoxaphospholes and Their Spiro Analogues by a Three-Component Coupling Involving Arynes, Phosphines, and Activated Ketones.

Bhunia, A.; Roy, T.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2014, 16, 5132-5135. Link
52.  Facile Synthesis of γ-Ketophosphonates by an Intermolecular Stetter Reaction Onto Vinylphosphonates.

Patra, A.; Bhunia, A.; Biju, A. T.

Org. Lett. 2014, 16, 4798-4801. Link

For abstracts in Organic Chemistry Portal, see: www.organic-chemistry.org/abstracts/lit4/659.shtm 

51. Multicomponent Reactions Involving Phosphines, Arynes and Aldehydes.

Bhunia, A.; Kaicharla, T.; Porwal, D.; Gonnade, R. G.; Biju, A. T. 

Chem. Commun. 2014, 50, 11389-11392. Link
50. Transition-metal-free synthesis of benzo-fused five- and six-membered heterocycles employing arynes.

Kaicharla, T.; Biju, A. T. 

In “Green Synthetic Approaches for Biologically Relevant Heterocycles“, Book Chapter, Editor: Prof. Goutam Brahmachari,

Elsevier Science, 2014, 45-76. Link
49. Tandem [4 + 2]/[2 + 2] Cycloaddition Reactions Involving Indene or Benzofurans and Arynes.

Bhojgude, S. S.; Thangaraj, M.; Suresh, E.; Biju, A. T.

Org. Lett. 2014, 16, 3576-3579. Link
48. Diels-Alder Reaction of Tropones with Arynes: Synthesis of Functionalized Benzobicyclo[3.2.2]nonatrienones.

Thangaraj, M.; Bhojgude, S. S.; Bisht, R. H.; Gonnade, R. G.; Biju, A. T.

J. Org. Chem. 2014, 79, 4757-4762. Link
47. Synthesis of Functionalized Coumarins and Quinolinones by NHC-Catalyzed Annulation of Modified Enals with Heterocyclic C-H Acids.

Yetra, S. R.; Roy, T.; Bhunia, A.; Porwal, D.; Biju, A. T. 

J. Org. Chem. 2014, 79, 4245-4251. Link
46. Practical Synthesis of Phthalimides and Benzamides by a Multicomponent Reaction Involving Arynes, Isocyanides, and CO2/H2O.

Kaicharla, T.; Thangaraj, M.; Biju, A. T.

Org. Lett. 2014, 16, 1728-1731. Link 

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/434.shtm

45. Efficient Synthesis of 9-Aryldihydrophenanthrenes by a Cascade Reaction Involving Arynes and Styrenes.

Bhojgude, S. S.; Bhunia, A.; Gonnade, R. G.; Biju ,A. T.

Org. Lett. 2014, 16, 676-679. Link
44. Employing Arynes in Transition-Metal-Free, N-Heterocycles Initiated Multicomponent Reactions.

Bhunia, A.; Biju, A. T.

Synlett. 2014, 25, 608-614. Link

Invited Synpacts Article

2013
43.  Employing Arynes in Transition-Metal-Free Monoarylation of Aromatic Tertiary Amines.

Bhojgude, S. S.; Kaicharla, T.; Biju, A. T.

Org. Lett. 2013, 15, 5452-5455. Link

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/224.shtm

42.  Asymmetric N-Heterocyclic Carbene (NHC)-Catalyzed Annulation of Modified Enals with Enolizable Aldehydes.

Yetra, S. R.; Kaicharla, T.; Kunte, S. S.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2013, 15, 5202 – 5205. Link

For abstracts in Organic Chemistry Portal, see: http://www.organic-chemistry.org/abstracts/lit4/202.shtm
41. Multicomponent Reactions Involving Arynes, Quinolines, and Aldehydes.

Bhunia, A.; Porwal, D.; Gonnade, R. G.; Biju, A. T.

Org. Lett. 2013, 15, 4620- 623. Link
40. Transition-Metal-Free Multicomponent Reactions Involving Arynes, N-Heterocycles and Isatins.

Bhunia, A.; Roy, T.; Pachfule, P.; Rajamohanan, P. R.; Biju, A. T. 

Angew. Chem. Int. Ed. 2013, 52, 10040-10043. Link

Among the most accessed papers in August 2013, Invited for Synpacts
39. Engaging isatins in solvent-free, sterically congested Passerini reaction.

Kaicharla, T.; Yetra, S. R.; Roy, T.; Biju, A. T.

Green Chem. 2013, 15, 1608-1614. Link
38. Enantioselective N-Heterocyclic Carbene-Catalyzed Annulations of 2-Bromoenals with 1,3-Dicarbonyl Compounds and Enamines via Chiral α,β-Unsaturated Acyl Azoliums.

Yetra, S. R.; Bhunia, A.; Patra, A.; Mane, M. V.; Vanka, K.; Biju, A. T. 

Adv. Synth. Catal. 2013, 335, 1089-1097. Link
37. NHC-Catalyzed Reaction of Enals with Hydroxy Chalcones:Diastereoselective Synthesis of Functionalized Coumarins.

Bhunia, A.; Patra, A.; Puranik, V.; Biju, A. T.   

Org. Lett. 2013, 15, 1756-759. Link

Highlighted in Synfacts 2013, 9, 670.

2012
36. Efficient Diels-Alder Reaction of 1,2-Benzoquinones with Arynes and Its Utility in One-Pot Reactions.

Kaicharla, T.; Bhojgude, S. S. ; Biju, A. T. 

Org. Lett. 2012, 14, 6238-6241. Link
35. A Practical and General Diels-Alder Reaction of Pentafulvenes with Arynes.

Bhojgude, S. S.; Kaicharla, T.; Bhunia, A.; Biju, A. T.   

Org. Lett. 2012, 14, 4098-4101. Link
34. Efficient Synthesis of γ-Keto Sulfones by NHC-Catalyzed Intermolecular Stetter Reaction.

Bhunia, A.; Yetra, S. R.; Bhojgude, S. S.; Biju, A. T. 

Org. Lett. 2012, 14, 2830-2833. Link
33. 1,2-Benzoquinones in Diels-Alder reactions, dipolar cycloadditions, nucleophilic additions, multicomponent reactions and more.

Nair, V.; Menon, R. S.; Biju, A. T.; Abhilash, K. G.  

Chem. Soc. Rev. 2012, 41, 1050-1059. Link
32. Arynes in Transition-Metal-Free Multicomponent Coupling Reactions.

Bhojgude, S. S.; Biju, A. T.    

Angew. Chem. Int. Ed. 2012, 51, 1520-1522. Link
31. Recent Advances in Transition-Metal-Free Carbon-Carbon and Carbon-Heteroatom Bond-Forming Reactions Using Arynes.

Bhunia, A.; Yetra, S. R.; Biju, A. T.    

Chem. Soc. Rev. 2012, 41, 3140-3152. Link

2011 and prior
30. Organocatalytic Asymmetric 1,6-Addition Reactions.

Biju, A. T.    

Chem. Cat. Chem. 2011, 3, 1847-1849. Link

29. Efficient Synthesis of Benzofuranones: N-Heterocyclic Carbene (NHC)/Base-Catalyzed Hydroacylation-Stetter-Rearrangement Cascade.

Padmanaban, M.; Biju, A. T.; Glorius, F.     

Org. Lett. 2011, 13, 5624- 5627. Link

28. Employing Homoenolates Generated by NHC Catalysis in Carbon-Carbon Bond-Forming Reactions: State of the Art.

Nair, V.; Menon, R. S.; Biju, A. T.; Sinu, C. R.; Paul, R. R.; Jose, A.; Sreekumar, V.    

Chem. Soc. Rev. 2011, 40, 5336-5346. Link

27. N-Heterocyclic Carbene (NHC)-Catalyzed Umpolung of Michael Acceptors for Intermolecular Reactions.

Biju, A. T.; Padmanaban, M.; Wurz, N. E.; Glorius, F.    

Angew. Chem., Int. Ed. 2011, 50, 8412-8415. Link

26. Extending NHC-Catalysis: Reaction of Aldehydes with Unconventional Reaction Partners.

Biju, A. T.; Kuhl, N. Glorius, F.    

Acc. Chem. Res. 2011, 44, 1182-1195. Link

25. Synthesis and Application of a Chiral Diborate.

Loewer, Y.; Weiß, C.; Biju, A. T.; Fröhlich, R.; Glorius. F.   

J. Org. Chem. 2011, 76, 2324-2327. Link

24. N-Heterocyclic Carbene-Catalyzed Cross-Coupling of Aromatic Aldehydes with Activated Alkyl Halides.

Padmanaban, M.; Biju, A. T.; Glorius, F.     

Org. Lett. 2011, 13, 98-101. Link

Highlighted in Synfacts 2011, 2, 209.

23. Intermolecular N-Heterocyclic Carbene-Catalyzed Hydroacylation of Arynes.

Biju, A. T.; Glorius, F.    

Angew. Chem., Int. Ed. 2010, 49, 9761-9764. Link

(This Communication is one of the most accessed papers in November 2010).

Selected as Hot Paper by Angewandte Chemie

This work has been Highlighted in Synfacts 2011, 1, 95.

22. N-Heterocyclic Carbene-Catalyzed Cascade Reaction Involving the Hydroacylation of Unactivated Alkynes.

Biju, A. T.; Wurz, N. E.; Glorius, F.    

J. Am. Chem. Soc. 2010, 132, 5970-5971. Link

(This Communication is one of the most accessed papers in April 2010).

Highlighted in Synfacts 2010, 6, 716.

21. Switching the Electron-Donor Properties of N-Heterocyclic Carbenes by a Facile Deprotonation Strategy. 

Biju, A. T.; Hirano, K.; Fröhlich, R.; Glorius, F.

Chem. Asian J. 2009, 4, 1786-1789. Link 

20. Copper-Catalyzed Synthesis of 2-Unsubstituted, N-Substituted Benzimidazoles. 

Hirano, K.; Biju, A. T.; Glorius, F.

J. Org. Chem. 2009, 74, 9570-9572. Link 

19. N-Heterocyclic Carbene-Catalyzed Hydroacylation of Unactivated Double Bonds. 

Hirano, K.†; Biju, A.T.† ; Piel, I.; Glorius, F.

J. Am. Chem. Soc. 2009, 131, 14190-14191. Link 

Highlighted in Synfacts 2009, 12, 1404.

18. Polymeric Ladderphanes. 

Chou, C.-M.; Lee, S.-L.; Chen, C.-H; Biju, A. T.; Wang, H.-W.; Wu, Y.-L.; Zhang, G.-F.; Yang, K.-W.; Lim, T.-S.; Huang, M.-J.; Tsai, P.-Y.; Lin, K.-C.; Huang, S.-L.; Chen, C.-h.; Luh, T.-Y.

J. Am. Chem. Soc. 2009, 131, 12579-12585. Link 

17. Reactions of Morita-Baylis-Hillman Acetates with Huisgen Zwitterions: A Novel Strategy for the Synthesis of β-Amino Acid Derivatives. 

Jose, A.; Paul, R. R.; Mohan, R.; Mathew, S. C.; Biju, A. T.; Suresh, E.; Nair, V.

Synthesis, 2009, 1829-1833. Link 

16. Carbon-Nitrogen Bond-Forming Reactions of Dialkyl Azodicarboxylate: A Promising Synthetic Strategy. 

Nair, V.; Biju, A. T.; Mathew, S. C.; Beneesh, P. B.

Chem. Asian J. 2008, 3, 810-820. Link 

15. Reaction of Huisgen Zwitterion with Diaryl Ketones Leading to the Facile Synthesis of Mono- and Bis(alkoxycarbonyl)hydrazones. 

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Synthesis 2008, 1078-1084. Link 

14. Reaction of TPP-Azodicarboxylate Zwitterions and Aldehydes: Unprecedented Synthesis of Acyl Carbamates.  

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Tetrahedron Lett. 2007,  48, 9018-9020. Link 

13. Efficient Higher-Order Cycloaddition Reactions of 8,8-Dicyanoheptafulvenes with Dienes.  

Nair, V.; Abhilash, K. G.; Biju, A. T.; Suresh, E.

Synthesis 2007,  1833-1836. Link 

12. Stereoselective Synthesis of 3,4-trans-Disubstituted γ-Lactams by Cerium(IV) Ammonium Nitrate Mediated Radical Cyclization of Cinnamamides.   

Nair, V.; Mohanan, K.; Suja, T. D.; Biju, A. T.

Synthesis 2007, 1179-1184. Link 

11. A Novel Reaction of the “Huisgen Zwitterion” with Chalcones and Dienones: An Efficient Strategy for the Synthesis of Pyrazoline and Pyrazolopyridazine Derivatives.   

Nair, V.; Mathew, S. C.; Biju, A. T.; Suresh, E.

Angew. Chem. Int. Ed. 2007, 46, 2070-2073. Link 

Highlighted in Synfacts 2007, 577.

10. The Reaction of Huisgen Zwitterion with Diaryl-1,2-diones and Ketones: An Efficient Protocol for Carbon-Nitrogen Bond Formation.    

Nair, V.; Biju, A. T.; Mathew, S. C.

Synthesis 2007, 697-704. Link 

9. DMAP-Catalyzed Reaction of b-ketoesters and Dimethyl Acetylenedicarboxylate: An Efficient Synthesis of Polysubstituted Benzenes and Biaryls.   

Nair, V.; Vidya, N.; Biju, A. T.; Deepthi, A.; Abhilash, K. G.; Suresh, E.

Tetrahedron 2006, 62, 10136-10140. Link 

8. Engaging Zwitterions in Carbon-Carbon and Carbon-Nitrogen Bond- Forming Reactions: A Promising Synthetic Strategy.   

Nair, V.; Menon, R. S.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.

Acc. Chem. Res. 2006, 39, 520-530. Link 

7. Novel Synthesis of Highly Functionalized Pyrazolines and Pyrazoles by Triphenylphosphine Mediated Reaction of Dialkyl Azodicarboxylate with Allenic Esters.   

Nair, V.; Biju, A. T.; Mohanan, K.; Suresh, E.

Org. Lett. 2006, 8, 2213-2216. Link

6. Reaction of Huisgen Zwitterion with 1,2-Benzoquinones and Isatins: Expeditious Synthesis of Dihydro-1,2,3-Benzoxadiazoles and Spirooxadiazolines.

Nair, V.; Biju, A. T.; Vinod, A. U.; Suresh, E.

Org. Lett. 2005, 7, 5139.

5. Reaction of Diaryl-1,2-diones with Triphenylphosphine and Diethyl Azodicarboxylate Leading to N, N-Dicarboethoxy Monohydrazones via a Novel Rearrangement.

Nair, V.; Biju, A. T.; Abhilash, K. G.; Menon, R. S.; Suresh, E.

Org. Lett. 2005, 7, 2121.

4. 1,4-Dipolar Cycloaddition in Organic synthesis: A Facile Route to Isoquinoline Fused Heterocycles.

Nair, V.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.; Varma, L.; Viji, S.; Mathew, S.

ARKIVOC 2005, 9, 178.

3. One Pot Four Component Reaction of Isocyanides, Dimethyl Acetylenedicarboxylate and Cyclobutene-1,2-diones: Synthesis of Spiro heterocycles.

Nair, V.; Menon, R. S.; Deepthi, A.; Devi, B.R.; Biju, A. T.

Tetrahedron Lett. 2005, 46, 1337.

2. Novel Pyridine Catalyzed Reaction of Dimethyl Acetylenedicarboxylate with Carbonyl Compounds and N-Tosylimines: Efficient Synthesis of 2-Benzoyl Fumarates and 1-Azadienes.

Nair, V.; Sreekanth, A. R.; Abhilash, N.; Biju, A. T.; Remadevi, B.; Menon, R. S.; Rath, N. P.

Synthesis 2003, 1895.

1. The Reaction of Isoquinoline and Dimethyl Acetylenedicarboxylate with 1,2- and 1,4-diones : A Novel Synthesis of Spiro [1,3] oxazino [2,3-a] isoquinolines.

Nair, V.; Sreekanth, A. R.; Biju, A. T.; Rath, N. P.

Tetrahedron Lett. 2003, 44, 729.