2024
209.
Site-Selective Direct Nitration of 2H-Indazoles: Easy Access to 7-Nitroindazoles.
Bhattacharjee, S.; Hajra, A.*
Chem. Commun., 2024, Accepted Manuscript doi
208.
Silylarylation of Alkenes via meta-Selective C-H Activation of Arenes under Ruthenium/Iron Cooperative Catalysis: Mechanistic Insights from Combined Experimental and Computational Studies.
Neogi, S.; Bhunya, S.; Ghosh, A. K.; Sarkar, B.; Roy, L; Hajra, A*
ACS Catal. 2024, 14, 4510–4522. doi
207.
Iodine(III)-Promoted Oxidative Carbotrifluoromethylation of Maleimides with Imidazopyridines and Langlois’ Reagent
D. Lai, S. Bhattacharjee, S. Mandal, S. Ghosh, P. Sahoo, S. Sinha and A. Hajra*
Chem. Commun., 2024, 60, 2232-2235. doi
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206.
Silylation of 2H-indazoles by photoinduced hydrogen-atom transfer catalysis
K. K. Das, A. Hajra*
Org. Biomol. Chem. 2024, 22, 1034-1037. doi
204.
Skeletal Editing through Molecular Recombination of 2H-Indazoles to Azo-Linked-Quinazolinones
S. Bhattacharjee, A. Hajra*
Chem. Eur. J. 2024, e202303240 doi
203.
One-Pot Manganese (I)-Catalyzed Oxidant-Controlled Divergent Functionalization of 2-Arylindazoles
K. K. Das, A. K. Ghosh, A. Hajra*
Chem. Eur. J. 2023, e202302849 doi
201.
Visible light-induced organophotoredox-catalyzed difunctionalization of alkenes and alkynes
S. Gupta,† A. Kundu,† S. Ghosh,† A. Chakraborty, A. Hajra*
Green Chem., 2023, 25, 8459-8493 doi
199.
Imino-λ3-iodane-Triggered Oxidative Ring-Opening of 2H-Indazoles to ortho-N-Acylsulfonamidated Azobenzenes
S. Bhattacharjee, A. Hajra*
Org. Lett. 2023, 25, 4183–4187 doi
198.
Synergistic Photoredox and Iron(II) Catalyzed Carbophosphorothiolation of Vinyl Arenes
A. K. Ghosh, S. Neogi, P. Ghosh, A. Hajra*
Adv. Synth. Catal. 2023, 365, 2271 doi
197.
Electrochemical C–H Sulfonylation of Hydrazones
B. Sarkar, P. Ghosh, A. Hajra*
Org. Lett. 2023, 25, 3440–3444 doi
196.
Redox-neutral carbon–heteroatom bond formation under photoredox catalysis
S. Ghosh,‡ S. Majumder,‡ D. Ghosh,‡ A. Hajra*
Chem. Commun. 2023, 59, 7004-7027 doi
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195.
Recent advances in carbosilylation of alkenes and alkynes
Pal, P. P.; Ghosh, S. and A. Hajra*
Org. Biomol. Chem. 2023, 21, 2272. doi
194.
Aerobic Cu(I)-Catalyzed Site-Selective 1,3-Difunctionalization of Indazole through Cascade C−N and C−O Bond Formation
K. K. Das, A. K. Ghosh, T. Mallick, N. A. Begum, A. Hajra*
Adv. Synth. Catal. 2023, 365, 388. doi
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192.
Visible-light-induced Mn(0)-catalyzed direct C-3 mono-, di- and perfluoroalkylation reactions of 2H-indazoles
S. Laru, S. Bhattacharjee, A. Hajra*
Chem. Commun. 2022, 58, 13604. doi
190
Hypervalent iodine(iii)-mediated oxidative dearomatization of 2H-indazoles towards indazolyl indazolones
S. Bhattacharjee, S. Laru, A. Hajra*
Org. Biomol. Chem. 2022, 20, 8893-8897. doi
188.
Visible-light-induced metal-free coupling of C(sp3)–H sources with heteroarenes
Ghosh, A.; Pyne, P.; Ghosh, S.; Ghosh, D.; Majumdar, S. and Hajra, A.
Green Chem., 2022, 24, 3056. doi
187.
Transition-metal-catalyzed ortho C–H functionalization of 2-arylquinoxalines.
Mondal. K.; Ghosh S.; Hajra A.
Org. Biomol. Chem., 2022, 20, 7361. doi
186.
Recent Advances in Microwave-assisted Cross-Coupling Reactions.
Rahman, M.; Ghosh, S.; Bhattacherjee, D.; Zyryanov, G. V.; Bagdi, A. K.; Hajra A.
Asian J. Org. Chem., 2022, e202200179. doi
185.
Asymmetric C(sp3)–H borylation: an update.
Ghosh S..; Ghosh, A.; Pyne, A.; Hajra A.
Org. Biomol. Chem., 2022, 20, 4496-4511 doi
184.
Direct Asymmetric Addition of Heteroatom Nucleophiles to Imines.
Egorov, I. N.; Santra, S.; Zyryanov, G. V.; Majee, A.; Hajra, A.; Chupakhin, O. N.
Adv. Synth. Catal. 2022, 364, 2092. doi
183.
Organocatalytic Oxidative C–H Amination of Aldehyde Hydrazones with Azoles at Ambient Temperature.
Ghosh, A.K.; Neogi, S.; Das, K. K.; Hajra, A.
J. Org. Chem. 2022, 87, 5682–5689. doi
182.
Visible light-induced functionalization of indazole and pyrazole: a recent update
Ghosh, D.; Ghosh, S.; Ghosh, A.; Pyne, P.; Majumder, S.; Hajra, A.
Chem. Commun. 2022, 58, 4435–4455. doi
181.
Late-stage ortho-C–H alkenylation of 2-arylindazoles in aqueous medium by Manganese(I)-catalysis
Das, K. K.; Ghosh, A. K.; Hajra, A
RSC Adv. 2022, 12 , 19412–19416 doi
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180.
Synthesis of Unsymmetrical Biheteroarenes via Dehydrogenative and Decarboxylative Coupling: A Decade Update.
Majumder, S.; Ghosh, S.; Pyne, P.; Ghosh, A.; Ghosh, D.; Hajra, A.
Chem. Rec. 2022, 22, e202100288 doi
179.
Remote Difunctionalization of 2H-Indazoles Using Koser’s Reagents.
Bhattacharjee, S.; Laru, S.; Hajra, A.
Chem. Commun. 2022, 58, 981–984. doi
178.
Ortho C−H Functionalization of 2‐arylImidazo[1,2‐a]Pyridines.
Ghosh, S.; Laru, S.; Hajra, A
Chem. Rec. 2022, 22, e202100240. doi
177.
Electrochemical Functionalization of Imidazopyridine and Indazole: An Overview.
Ghosh, D.; Ghosh, S.; Hajra, A.
Adv. Synth. Catal. 2021, 363, 5047–5071. doi
176.
One-Pot Construction of Indolo[2,3-b]Quinoxalines through Ruthenium-Catalyzed Ortho C–H Bond Functionalization of 2-Arylquinoxalines with Sulfonyl Azides.
Laru, S.; Bhattacharjee, S.; Ghosh, S.; Hajra, A.
Org. Lett. 2021, 23, 7624–7629. doi
175.
Three-Component Carbosilylation of Alkenes by Merging Iron and Visible-Light Photocatalysis.
Neogi, S.; Ghosh, A. K.; Mandal, S.; Ghosh, D.; Ghosh, D. and Hajra, A.
Org. Lett. 2021, 23, 6510. doi
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Fluorination of 2H-Indazoles Using N-Fluorobenzenesulfonimide.
Ghosh, P. and Hajra, A.
J. Org. Chem., 2021, 86, 10883. doi
173.
Potassium Persulfate Mediated Chemodivergent C-3 Functionalization of 2H-Indazoles with DMSO as C1 Source. Bhattacharjee, S.; Laru, S.; Ghosh, P. and Hajra, A.
J. Org. Chem., 2021, 86, 10866. doi
172.
Ru(II)-Catalyzed Switchable C–H Alkylation and Spirocyclization of 2-Arylquinoxalines with Maleimides via ortho-C–H Activation.
Laru, S.; Bhattacharjee, S.; Singsardar, M.; Samanta, S. and Hajra, A.
J. Org. Chem., 2021, 86, 2784 doi
171.
ortho-Allylation of 2-Arylindazoles with Vinyl Cyclic Carbonate and Diallyl Carbonate via Manganese-Catalyzed C-H Bond Activation.
Ghosh, A. K.; Das, K. and Hajra, A.
Adv. Synth. Catal, 2021, 363, 4974. doi
170.
Advances in Transition‐Metal Catalyzed Carbonylative Suzuki‐Miyaura Coupling Reaction: An Update.
Bhattacherjee, D.; Rahman, M.; Ghosh, S.; Bagdi, A. K.; Zyranov, G.; Chupakhin, O.; Das, P. and Hajra, A.
Adv Synth Catal, 2021, 363, 1597. doi
169.
Light-Induced Borylation: Developments and Mechanistic Insights.
Lai, D.; Ghosh, S.and Hajra, A.
Org. Biomol. Chem., 2021, 19, 4397. doi
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Visible-light-induced silylation: an update.
Ghosh, S.; Lai, D. and Hajra, A.
Org. Biomol. Chem., 2021, 19, 2399. doi
2020
167.
Aminomethylation of Imidazopyridines using N,N-Dimethylformamide as an Aminomethylating Reagent under Cu(II)-Catalysis.
Ghosh, P.; Samanta, S.; Ghosh, S.; Jana, S. and Hajra, A.
Tetrahedron Lett. 2020, 61, 152581. doi
166.
Functionalized ionic liquid tagged Cu(II) catalyst: Design, characterization, and application in synthesis of imidazo[1,2-a]pyridine
Ghosh, S.; Kundu, D.; Dey, A.; Majee, A. and Hajra, A.
J. Indian Chem. Soc., 2020, 97, 2533 doi (Convention Issue Special)
165.
Rhodium-Catalyzed Directed C(sp2)−H Bond Addition of 2-Arylindazoles to N-Sulfonylformaldimines and Activated Aldehydes.
Ghosh, A. K.; Ghosh. P and Hajra, A.
J. Org. Chem., 2020, 85, 15752 doi
164.
Recent advances in the synthesis of fluorinated compounds via an aryne intermediate.
Rahman, M.; Bagdi, A. K.; Kopchuk, D. S.; Koyalev, I. S.; Zyryanov, G. V.; Chupakhin, O. N.; Majee, A. and Hajra, A.
Org. Biomol. Chem., 2020, 18, 9562. doi
163.
Fe(iii)-Catalyzed synthesis of steroidal imidazoheterocycles as potent antiproliferative agents.
Samanta, S.; Ghosh, A. K.; Ghosh, S.; Ilina, A. A.; Shirinian, V. Z. and Hajra, A.
Org. Biomol. Chem., 2020, 18, 5571. doi
162.
Direct Catalytic Functionalization of Indazole Derivatives.
Ghosh, S.; Mondal, S. and Hajra, A.
Adv. Synth. Catal., 2020, 362, 3768. doi
161.
Trifunctionalization of alkenes and alkynes.
Ghosh, S.; Lai, D. and Hajra,A.
Org. Biomol. Chem., 2020, 18, 7948. doi
160.
Advances in Oxosulfonylation Reaction.
Ghosh, S.; Samanta, S.; Ghosh, A. K.; neogi, S. and Hajra, A.
Adv Synth Catal., 2020, 362, 4552. doi
159.
Organophotoredox-Catalyzed Direct C–H Amination of 2H-Indazoles with Amines.
Neogi, S.; Ghosh, A. K.; Majhi, K.; Samant, S.; Kibriya, G. and Hajra, A.
Org. Lett. 2020, 22, 5605. doi
158.
Dioxygen-Triggered Oxo-Sulfonylation of Hydrazones.
Ghosh, A. K.; Mondal, S. and Hajra, A.
Org. Lett., 2020, 22, 2771. doi
157.
tert-Butyl Hydroperoxide-Mediated Oxo-Sulfonylation of 2H-Indazoles with Sulfinic Acid toward Indazol-3(2H)-ones
Ghosh, P.; Mondal, S. and Hajra, A.
Org. Lett. 2020, 22, 1086. doi
156.
Visible light-induced photocatalytic C–H ethoxycarbonylmethylation of imidazoheterocycles with ethyl diazoacetate.
Bhattacharjee, S; Laru, S.; Samanta, S.; Singsardar, M and Hajra, A.
RSC Adv., 2020, 10, 27984. doi
155.
Regioselective hydroarylation and arylation of maleimides with indazoles via a Rh(iii)-catalyzed C–H activation.
Ghosh, A, K.; Samanta, S.; Ghosh, P.; Neogi, S. and Hajra, A.
Org. Biomol. Chem., 2020, 18, 3093. doi
154.
Visible light promoted C–H functionalization of imidazoheterocycles.
Bagdi, A. K. and Hajra, A.
Org. Biomol. Chem., 2020, 18, 2611. doi
153.
Rhodium(iii)-catalyzed ortho-C–H amidation of 2-arylindazoles with a dioxazolone as an amidating reagent.
Ghosh, P.; Samanta, S. and Hajra, A.
Org. Biomol. Chem., 2020, 18, 1728. doi
152.
Visible-light-promoted oxidative coupling of styrene with cyclic ethers.
Kibriya, G.; Ghosh, D and Hajra, A.
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151. Organophotoredox-Catalyzed C(sp2)–H Difluoromethylenephosphonation of Imidazoheterocycles.
Singsardar, M. Mondal, S. Laru, S. and Hajra, A.
Org. Lett. 2019, 21, 5606. doi
150. Rhodium-Catalyzed Directed C–H Amidation of Imidazoheterocycles with Dioxazolones.
Samanta, S.; Mondal, S.; Ghosh, D. and Hajra, A.
Org. Lett. 2019, 21, 4905. doi
149. Metal-Free Synthesis of 2-Arylbenzothiazoles from Aldehydes, Amines, and Thiocyanate.
Dey, A. and Hajra, A.
Org. Lett. 2019, 21, 1686. doi
148. Visible-Light-Induced Regioselective Cross-Dehydrogenative Coupling of 2H-Indazoles with Ethers.
Singsardar, M.; Laru, S.; Mondal, S. and Hajra, A.
J. Org. Chem., 2019, 84, 4543. doi
147. Mn(II)-Catalyzed C–H Alkylation of Imidazopyridines and N-Heteroarenes via Decarbonylative and Cross-Dbehydrogenative Coupling.
Samanta, S. and Hajra, A.
J. Org. Chem., 2019, 84, 4363. doi
146. Iodine-Catalyzed Selenylation of 2H-Indazole.
Dey, A and Hajra, A.
J. Org. Chem., 2019, 84, 14904. doi
145. Visible-Light-Induced Regioselective C(sp3)-H Acyloxylation of Aryl-2H-azirines with (Diacetoxy)iodobenzene.
Dey, A.; Santra, S.; Hajra, A.; Zyryanov, G. V. and Majee, A.
J. Org. Chem., 2019, 84, 11735. doi
144. Potassium Persulfate‐Mediated Thiocyanation of 2H‐Indazole under Iron‐Catalysis.
Dey, A. and Hajra, A.
Adv. Synth. Catal., 2019, 361, 842. doi
143. Mn (III)-Mediated C–H Phosphorylation of Indazoles with Dialkyl Phosphites.
Ghosh, P. Mondal, S. and Hajra, A.,
ACS Omega, 2019, 4, 9049. doi
142. Visible-Light-Mediated Synthesis of Unsymmetrical Diaryl Sulfides via Oxidative Coupling of Arylhydrazine with Thiol.
Kibriya, G. Mondal. S. and Hajra, A.
Org. Lett. 2018, 20, 7740. doi
141. Metal-Free Trifluoromethylation of Indazoles.
Ghosh, P; Mondal, S; Hajra, A.
J. Org. Chem., 2018, 83, 13618. doi
140. Divergent Synthesis of Allenylsulfonamide and Enaminonesulfonamide via In(III)-Catalyzed Couplings of Propargylamine and N-Fluorobenzenesulfonimide
Samanta, S. and Hajra A.
J. Org. Chem., 2018, 83, 13157. doi
139. Visible-Light-Induced Organophotoredox-Catalyzed Phosphonylation of 2H-Indazoles with Diphenylphosphine Oxide.
Singsardar, M.; Dey, A.; Sarkar, R. and Hajra, A.
J. Org. Chem., 2018, 83, 12694. doi
138. Visible-Light-Promoted C (sp3)-C (sp2) Cross-Dehydrogenative Coupling of Tertiary Amine with Imidazopyridine.
Kibriya, G.; Bagdi A.K. and Hajra, A.
J. Org. Chem. 2018, 83, 10619. doi
137. Metal-Free C-5 Hydroxylation of 8-Aminoquinoline Amide
Mondal S. and Hajra, A.
J. Org. Chem., 2018, 83, 11392. doi
136. Regioselective synthesis of unsymmetrical biheteroaryls via copper (II)-catalyzed cascade annulations.
Samanta, S. and Hajra, A.
Chem. Commun., 2018, 54, 3379. doi
135. Regioselective C‐7 Nitration of 8‐Aminoquinoline Amides Using tert‐Butyl Nitrite
Mondal, S.; Samanta, S. and Hajra, A.
Adv. Synth. Catal., 2018, 360, 1026. doi
134. Synthesis of Benzo[4,5]imidazo[2,1-b]thiazole by Cu(II)-catalyzed Thioamination of Nitroalkene with 1H-Benzo[d]imidazole-2-thiol.
Jana, S.; Chakraborty, A.; Shirinian, V. Z. and Hajra, A.
Adv. Synth. Catal., 2018, 360, 2402. doi
133. Ruthenium (II)-catalyzed remote C-H addition of 8-aminoquinoline amide to activated aldehyde.
Mondal, S. and Hajra, A.
Org. Biomol. Chem., 2018, 16, 2846. doi
132. Visible light induced tetramethylethylenediamine assisted formylation of imidazopyridines.
Kibriya, G; Bagdi, A. K. and Hajra, A.
Org. Biomol. Chem., 2018, 16, 3473. doi
131. A convergent synthesis of vinyloxyimidazopyridine via Cu(I)-catalyzed three-component coupling.
Samanta, S.; Mondal, S. and Hajra, A.
Org. Biomol. Chem., 2018, 16, 1088. [Highlighted in the front cover picture] doi
130. Synthesis of Triazolium Inner Salts by Thiocyanation of Aldehyde‐Derived Hydrazones
Mondal, S.; Samanta. S. and Hajra, A.
Eur. J. Org. Chem, 2018, 2018, 1060. doi
129. Synthesis and evaluation of the antiproliferative activity of benzylidenes of 16-dehydroprogesterone series.
Scherbakov, A.M.; Zavarzin, I. V.; Vorontsova, S.K.; Hajra, A.; Andreeva, O. E.; Yadykov, A. V.; Levina, I. S.; Volkova, Y. A. and Shirinian, V. Z.
Steroids, 2018, 138, 91. doi
128. Mild, Efficient, and Metal-Free Radical 1,2-Dithiocyanation of Alkynes and Alkenes at Room Temperature.
Samanta, S.; Chatterjee, R.; Santra, S.; Hajra, A.; Khalymbadzha, I. A.; Zyryanov, G. V. and Majee, A.
ACS Omega, 2018, 3, 13081. doi
127. (Diacetoxy)iodobenzene-Mediated Regioselective Imidation of Imidazoheterocycles with N-Fluorobenzenesulfonimide.
Singsardar, M.; Mondal, S.; Sarkar, R. and Hajra, A.
ACS Omega, 2018, 3, 12505. doi
126. Ruthenium-catalyzed tandem annulation/arylation for the synthesis of unsymmetrical bis (heteroaryl) methanes.
Samanta, S. and Hajra, A.
Org. Biomol. Chem., 2018, 16, 7012. doi
125. Determination of vertical ionization potential of nitroso-benzoimidazothiazole using charge transfer interaction with a series of acceptors.
Chaudhuri, T.; Santra, S.; Jana, S. and Hajra, A.
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2018, 204, 403. doi
124. Environment-Friendly Protocol for the Chlorination of Imidazoheterocycles by Chloramine-T.
Dey, A.; Singsardar, M.; Sarkar, R. and Hajra, A.
ACS Omega, 2018, 3, 3513. doi
123. Metal-free C–H arylation of imidazoheterocycles with aryl hydrazines
Jana, S.; Samanta, S.; Bagdi, A. K.; Shirinian, V. Z. and Hajra, A.
RSC Advances, 2018, 8, 12360. doi
122. Brønsted Acidic Ionic Liquid‐Catalyzed Regioselective Synthesis of Pyrazolopyrimidines and Their Photophysical Properties
Singsardar, M.; Sarkar, R.; Majhi, K.; Sinha, S. and Hajra, A.
ChemistrySelect, 2018, 3, 1404. doi
121. Synthesis and characterization of host-guest inclusion co mplex of m-cresol with β-cyclodextrin.
Majhi, K.; Khatun, R.; Jana, S.; Hajra, A. and Sinha, S.
Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2018, 90, 61. doi
120. Synthesis of diverse β-(nitrooxy)-substituted amines by regioselective ring-opening of aziridines under neat conditions
Samanta, S.; Chatterjee, R.; Mahato, S.; Hajra, A.; Santra, S.; Zyryanov, G. V. and Majee, A.
Synthetic Communications, 2018, 48, 1857. doi
119. Imidazolium Zwitterionic Molten Salt: An Efficient Organocatalyst under Neat Conditions at Room Temperature for the Synthesis of Dipyrromethanes as well as Bis(indolyl)methanes.
Chatterjee, R.; Mahato, S.; Santra, S.; Zyryanov, G. V.; Hajra, A.; Majee, A.
ChemistrySelect, 2018, 3, 5843. doi
118. Visible Light Organic Photoredox-Catalyzed C–H Alkoxylation of Imidazopyridine with Alcohol
G Kibriya, S Samanta, S Jana, S Mondal and Hajra, A.
J. Org. Chem., 2017, 82, 13722. doi
117. Metal‐Free Synthesis of Indoles from Arylhydrazines and Nitroalkenes at Room Temperature
M Singsardar, A Chakraborty, S Jana, Hajra, A.
ChemistrySelect, 2017, 2, 8893. doi
116. The Remarkable Cooperative Effect of a Brønsted Acidic Ionic Liquid in Cyclization between 2‐Aminobenzamides with Ketones.
Das, S.; Santra, S.; Jana, S.; Zyryanov, G. V.; Majee, A. Hajra, A.,
Eur. J. Org. Chem., 2017, 2017, 4955. doi
115. A Domino Approach for the Synthesis of α‐Iodo‐β‐dicarbonyl Compounds from α‐Epoxycarbonyls.
Mahato, S.; Chatterjee, R.; Santra, S.; Zyryanov, G. V.; Hajra, A. and Majee A.
ChemistrySelect, 2017, 2, 6254. doi
114. Aminomethylation of Imidazoheterocycles with Morpholine.
Mondal, S.; Samanta, S.; Singsardar, M. and Hajra, A.
Org. Lett., 2017, 19, 3751. doi
113. Steroidal pyrimidines and dihydrotriazines as novel classes of anticancer agents against hormone-dependent breast cancer cells.
Scherbakov, A. M.; Komkov, A. V.; Komendantova, A. S.; Andreeva, O.; Shirinian, V. Z.; Hajra, A.; Zavarzin, I. and Volkova, Y.
Frontiers in Pharmacology, 2017, 8, 979. doi
112. Brønsted acidic ionic liquid-catalyzed tandem reaction: an efficient approach towards regioselective synthesis of pyrano [3, 2-c] coumarins under solvent-free conditions.
Mahato, S.; Santra, S.; Chatterjee, R.; Zyryanov, G V, Hajra, A and Majee, A.
Green Chem., 2017, 19, 3282. doi
111. FeCl3/ZnI2-Catalyzed regioselective synthesis of angularly fused furans.
Dey, A and Hajra, A.
Org. Biomol. Chem., 2017, 15, 8084. doi
110. (Diacetoxy)iodobenzene-mediated Oxidative C-H Amination of Imidazopyridines at Ambient Temperature.
Mondal, S.; Samanta, S.; Jana, S. and Hajra, A.
J. Org. Chem., 2017, 82, 4504. doi
109. Copper-Catalyzed Regioselective Synthesis of Multisubstituted Furans by Coupling between Ketones and Aromatic Olefins.
Dey, A.; Ali, A.; Jana, S. and Hajra, A.
J. Org. Chem., 2017, 82, 4812. doi
108. Sodium persulfate mediated selenylation of arenofurans.
Kibriya, G. Samanta, S.; Singsardar, M.; Jana, S. and Hajra, A.
Eur. J. Org. Chem. 2017, 2017, 3055. doi
107. Palladium-catalyzed synthesis of indole fused coumarins via cross-dehydrogenative coupling .
Dey, A.; Ali, A. and Hajra, A.
Tetrahedron Lett., 2017, 58, 313. doi
106. Zn(OTf)2-Catalyzed Synthesis of Imidazole-substituted Allenes.
Jana, S.; Dey, A.; Singsardar, M.; Bagdi, A. K. and Hajra, A.
J. Org. Chem., 2016, 81, 9489. doi
105. FeCl3-Catalyzed Cross-Dehydrogenative Coupling between Imidazoheterocycles and Oxoaldehydes.
Samanta, S. and Hajra, A.
J. Org. Chem., 2016, 81, 10088. doi
104. N,N-Dimethylformamide as a Methylenating Reagent: Synthesis of Heterodiarylmethanes via Cu-Catalyzed Coupling between Imidazo[1,2-a]pyridines and Indoles/N,N-Dimethylaniline.
Mondal, S.; Samanta, S.; Santra, S.; Bagdi, A. K. and Hajra, A.
Adv. Synth. Catal. 2016, 358, 3633. doi
103. Design, Synthesis and Functionalization of Imidazoheterocycles.
Bagdi, A. K. and Hajra, A.
Chem. Rec. 2016, 16, 1868 (Invited Personal account). doi
102. Switching the regioselectivity in the copper-catalyzed synthesis of iodoimidazo[1,2-a]pyridines.
Samanta, S.; Jana, S.; Mondal, S.Monir, K.; Chandra, S. K. And Hajra, A.
Org. Biomol. Chem., 2016, 14, 1432 doi
101. Zwitterionic-type molten salt catalyzed iodination in water: Synthesis of iodoimidazoheterocycles.
Mondal, S.; Samanta, S.; Singsardar, M.; Mishra, S.; Mitra, S. and Hajra, A.
Synthesis, 2016, 48, 4009. doi
100. Ligand-free nickel-catalyzed C-S bond formation: synthesis of 2-aminobenzothiazoles.
Singsardar, S.; Mitra, S.; Majee, A. and Hajra, A.
Int. J. Res. Soc. Nat. Soc., 2016, 2455. doi
99. tert-Butyl nitrite mediated azo coupling between anilines and Imidazoheterocycles.
Chakraborty, A.; Jana, S.; Kibriya, G.; Dey, A. and Hajra, A.
RSC Advances, 2016, 6, 34146. doi
98. Zwitterionic imidazolium salt: Recent advances in Organocatalysis.
Das, S.; Santra, S.; Mondal, P.; Majee, A. and Hajra, A.
Synthesis, 2016, 48, 1269. doi
97. Copper-catalyzed C–H ethoxycarbonyldifluoromethylation of imidazoheterocycles.
Mishra, S.; Mondal, P.; Ghosh, M.; Mondal, S. and Hajra, A.
Org. Biomol. Chem., 2016, 14, 1432. doi
96. Peroxide-free synthesis of benzo [b][1,4] thiazine-1,1-dioxides and their antimicrobial study.
Mitra, S. Mukherjee, S. and Hajra, A.
RSC Advances, 2016, 6, 201. doi
95. Zwitterionic Imidazolium Salt: An Efficient Organocatalyst for the One-Pot Synthesis of 5,6-Unsubstituted 1,4-Dihydropyridine Scaffolds.
Bagdi, A. K.; Kundu, D.; Majee, A. and Hajra, A.
Current Organocatalysis 2016, 3, 169. doi
94. Combination of NH2OH·HCl and NaIO4: a new and mild reagent for the synthesis of vicinal diiodo carbonyl compounds. Santra, S.; Majee, A. and Hajra, A.
ARKIVOC 2016, (v), 416. doi
93. Organocatalysis by an aprotic imidazolium zwitterion: regioselective ring-opening of aziridines and applicable to gram scale synthesis.
Ghosal, N. C.; Santra, S.; Das, S.; Hajra, A.; Zyryanov, G.V. and Majee, A.
Green Chem., 2016, 18, 565. doi
92. A decade update on solvent and catalyst-free neat organic reactions: a step forward towards sustainability.
Sarkar, A.; Santra, S.; Hajra, A. and Majee, A.
Green Chem., 2016, 18, 4475. doi
91. Regioselective Oxidative Trifluoromethylation of Imidazoheterocycles via C (sp2)-H Bond Functionalization.
Monir, K.; Bagdi, A. K.; Ghosh, M. and Hajra, A.
J. Org. Chem., 2015, 80, 1332 (Selected in ACS Virtual Issue). doi
90. Regioselective Synthesis of Multisubstituted Furans via Copper Mediated Coupling between Ketones and β‑Nitrostyrenes.
Ghosh, M.; Mishra, S. and Hajra, A.
J. Org. Chem. 2015, 80. 5364 (Highlighted in Organic Chemistry Portal). doi
89. Metal-Free Thiocyanation of Imidazoheterocycles through Visible Light Photoredox Catalysis.
Mitra, S.; Ghosh, M.; Mishra, S. and Hajra, A.
J. Org. Chem., 2015, 80, 8275. doi
88. Synthesis of imidazo[1,2-a]pyridines: a decade update.
Bagdi, A. K.; Santra, S.; Monir, K. and Hajra, A.
Chem. Commun. 2015, 51, 1555. doi
87. Diversified Synthesis of Furans by the Coupling between Enols/1,3-dicarbonyl Compounds and Nitroolefins: Direct Access to Dioxa[5]helicenes.
Ghosh, M. and Hajra, A.
Chem Asian J. 2015, 10, 2525. doi
86. Copper catalyzed regioselective synthesis of furan via tandem cycloaddition of ketone with unsaturated carboxylic acid under air.
Ghosh, M.; Mishra, S.; Monir, K.; Hajra, A.
Org. Biomol. Chem. 2015, 13, 309. doi
85. Catalyst-free selenylation of Imidazoheterocycles.
Jana, S.; Chakraborty, A.; Mondal, S. and Hajra, A.
RSC Adv. 2015, 5, 77534. doi
84. Ligand-free reusable nano copper oxide-catalyzed synthesis of 3-amino-1, 4-diynes.
Mishra, S.; Santra, S.; Hajra, A.
RSC Adv. 2015, 5, 91326. (highlighted in Synfacts, 2016, 320). doi
83. Copper-catalyzed oxidative annulation between 2-aminopyridine and arylidenemalononitrile leading to 4-oxo-pyrido[1,2-a]pyrimidine-3-carbonitrile.
Mishra, S. and Hajra, A.
Tetrahedron Lett. 2015, 56, 5651. doi
82. Regioselective synthesis of nitrosoimidazoheterocycles using tert-butyl nitrite.
Monir, K.; Ghosh, M;. Majee, A and Hajra, A.
Org. Biomol. Chem. 2015, 13, 8717. doi
81. Palladium-catalyzed dehydrogenative annulation of imidazo[1,2-a]pyridines with diarylalkynes.
Ghosh, M.; Naskar, A.; Mishra, S and Hajra, A.
Tetrahedron Lett. 2015, 56(27), 4101.doi
Bagdi, A. K.; Mishra, S.; Ghosh, M. and Hajra, A.
Org. Biomol. Chem. 2015, 13, 3314. doi
79. Organocatalysis by p-sulfonic acid calix[4]arene: a convenient and efficient route to 2,3-dihydroquinazolin-4(1H)-ones in water.
Rahman, M.; Ling, L.; Abdullah, N.; Hashim, R. and Hajra, A.
RSC Adv. 2015, 5, 7755. doi
78. Palladium-Catalyzed α-Selective Alkenylation of Imidazo[1,2-a]pyridines via Aerobic Cross-Dehydrogenative Coupling Reaction. Ghosh, M.; Naskar, A.; Mitra, S. and Hajra, A.
Eur. J. Org. Chem. 2015, 2015, 715. doi
77. DABCO‐Promoted One‐Pot Facile Synthesis of Angularly Fused Furoquinolinones and Furocoumarins.
Ghosh, M. and Hajra, A.
Eur. J. Org. Chem. 2015, 2015, 7836. doi
76. Zinc Tetrafluoroborate: A Versatile and Robust Catalyst for Various Organic Reactions and Transformations.
Sarkar, A.; Santra, S.; Kundu, S. K.; Ghosal, N. C.; Hajra, A and Majee, A.
Synthesis, 2015, 1379. doi
75. Combination of NH2OH and HCl and NaIO4: an effective reagent for molecular iodine-free regioselective 1,2-difunctionalization of olefins and easy access of terminal acetals.
Chakraborty, N.; Santra, S.; Kundu, S.; Hajra, A.; Zyryanov, G. V. and Majee, A.
RSC Adv. 2015, 5, 56780. doi
74. FeCl3/ZnI2 catalyzed synthesis of benzo[d]imidazo [2,1-b] thiazole through aerobic oxidative cyclization between 2-aminobenzothiazole and ketone.
Mishra, S.; Monir, K.; Mitra, S. and Hajra, A.
Org. Lett. 2014, 16, 6084. doi
73. Copper (I) catalyzed oxidative coupling between 2-aminobenzothiazole and terminal alkyne: Formation of benzothiazine.
Mitra, S.; Chakraborty, A.; Mishra, S.; Majee, A. and Hajra, A.
Org. Lett. 2014, 16, 5652. doi
72. Unprecedented catalytic activity of Fe(NO3)3·9H2O: Regioselective synthesis of 2-nitroimidazopyridines via oxidative amination.
Monir, K.; Bagdi, A. K.; Ghosh, M. and Hajra, A.
Org. Lett. 2014, 16, 4630. (Highlighted in Organic Chemistry Portal). doi
71. Functionalization of sp3 CH bond via redox-neutral domino reaction: Diastereoselective synthesis of hexahydropyrrolo [2, 1-b] oxazoles.
Rahman, M.; Bagdi, A. K.; Mishra, S. and Hajra, A.
Chem. Commun. 2014, 50, 2951 (highlighted in Synfacts 2014; 10, 0357). doi
70. Copper(II)-catalyzed aerobic oxidative coupling between chalcone and 2-aminopyridine via C-H Amination: An expedient synthesis of 3-aroylimidazo[1,2-a]pyridines.
Monir, K.; Bagdi, A. K.; Mishra, S.; Majee, A. and Hajra, A.
Adv. Synth. Catal. 2014, 5, 1105. doi
69. PIDA-Mediated Synthesis of Aromatic Azo Compounds via Oxidative Dehydrogenative Coupling of Anilines: Scope and Mechanism.
Monir, K.; Ghosh, M.; Mishra, S.; Majee, A.; and Hajra, A.
J. Org. Chem., 2014, 2014, 1096. doi
68. Catalytic application of task specific ionic liquid on the synthesis of benzoquinazolinone derivatives by a multicomponent reaction.
Rahman, M.; Sarkar, A.; Ghosh, M.; Majee, A. and Hajra, A.
Tetrahedron. Lett., 2014, 55, 235. (Highlighted Synfacts, 2014, 10, 326) doi
67. Environmentally benign synthesis and antimicrobial study of novel chalcogenophosphates.
Mitra. S.; Mukherjee, S.; Sen. S. K. and Hajra, A.
Bioorg. Med. Chem. Lett. 2014, 9, 2198. doi
66. Iron(III)-catalyzed three-component domino strategy for the synthesis of imidazo[1,2-a]pyridines.
Santra, S.; Mitra, S.; Bagdi, A. K.; Majee, A. and Hajra, A.
Tetrahedron Lett. 2014, 55, 5151. doi
65. Nano indium oxide: An efficient catalyst for one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-ones with a greener prospect.
Santra, S.; Rahman, M.; Roy, A.; Majee, A.; Hajra, A.
Catal. Commun., 2014, 49, 52.doi
64. Brønsted acidic ionic liquid catalyzed tandem reaction of 4-hydroxy-1-methyl-2-quinolone with chalcone: regioselective synthesis of pyrano[3,2-c]quinolin-2-ones.
Bagdi, A. and Hajra, A.
RSC Adv., 2014, 4, 23287. doi
63. Organocatalysis by aprotic imidazolium zwitterion: A dramatic anion–cation cooperative effect on azide-nitrile cycloaddition.
Rahman, M.; Roy, A.; Ghosh, M., Majee, A. and Hajra, A.
62. Zinc Iodide: a mild and efficient catalyst for one-pot synthesis of aminoindolizines via sequential A3 coupling/cycloisomerization.
Mishra, S.; Bagdi, A. K.; Ghosh, M.; Sinha, S. and Hajra, A.
61. Microwave Assisted Three Component “Catalyst and Solvent Free” Green Protocol: A Highly Efficient and Clean One Pot Synthesis of Tetrahydrobenzo[b]pyrans.
S Santra, Rahman, M. Roy, A. Majee, A. and Hajra, A.
Organic Chemistry International, 2014, 10.1155/2014/851924. doi
60. Solvent-free silica-promoted multicomponent condensation: synthesis of highly functionalized piperidines.
Das, S, Bagdi, A. K. Santra, S. Majee, A. and Hajra, A.
Research on Chemical Intermediates, 2014, 1-15, 10.1007/s11164-014-1774-7 doi
59. Photoinduced electron transfer in metallooctaethylporphyrin(donor)–2nitrofluorene (acceptor) systems in polar acetonitrile liquid medium.
Ghosh, M. Mora, A. K. Nath, S. Hajra, A. and Sinha, S.
Journal of Photochemistry and Photobiology A: Chemistry, 2014, 290, 94. doi
58. An improved procedure of Miyashita protocol for the preparation of ureidomethylene derivatives of 1,3-dicarbonyl compounds.
Majee, A.; Kundu, S. K.; Santra, S.; and Hajra, A.
Ind. J. Chem. 2014, 53B, 124. doi
57. Synthesis of polysubstituted quinolines via copper(II)-catalyzed annulation of 2-aminoarylketones with alkynoates.
Bagdi, A. K.; Santra, S.; Rahman, M.; Majee, A. and Hajra, A.
RSC Adv., 2013, 3, 24034. doi
56. Metal nano particle in “on-water” organic synthesis: one-pot nano CuO catalyzed synthesis of isoindolo[2,1-a]quinazolines.
Santra, S.; Bagdi, A. K.; Majee, A.; Hajra, A.
RSC advances, 2013, 3, 24931. doi
55. Copper‐Catalyzed Synthesis of Imidazo [1, 2‐a] pyridines through Tandem Imine Formation‐Oxidative Cyclization under Ambient Air: One‐Step Synthesis of Zolimidine on a Gram‐Scale.
Bagdi, A. K.; Rahman, M.; Santra, S.; Majee, A.; Hajra, A.
Adv. Synth. Catal. 2013, 355 (9), 1741. doi
54. Iron(III)-Catalyzed Cascade Reaction between Nitroolefins and 2- Aminopyridines: Synthesis of Imidazo[1,2-a]pyridines and Easy Access towards Zolimidine.
Santra, S.; Bagdi, A. K.; Majee, A.; and Hajra, A.
Adv. Synth. Catal. 2013, 355 (6), 1065. doi
53. Nano indium oxide catalyzed tandem cyclization of amidine with nitroolefin.
Mitra, S.; Bagdi, A. K.; Majee, A and Hajra, A.
Tetrahedron Letters, 2013, 54, 4982. doi
52. Regioselective synthesis of pyrano[3,2-c]coumarins via Cu(II)-catalyzed tandem reaction.
Bagdi, A. K.; Majee, A.; Hajra,* A. T
Tetrahedron Lett., 2013, 54, 3892. doi
51. Fluorescence self-quenching of tetraphenylporphyrin in liquid medium.
Ghosh, M.; Nath, S.; Hajra, A.; Sinha, S.
Journal of Luminescence, 2013, 141, 87. doi
50. Photophysics of Soret-excited free base tetraphenylporphyrin and its zinc analog in solution.
Ghosh, M.; Mora, A. K.; Nath, S.; Chandra, A. K.; Hajra, A.; Sinha, S.
Spectrochimica Acta Part A, 2013, 116, 466. doi
49. Synthesis, structure and catalytic aspects of the palladium (II) complex [PdLCl](where LH= 2-formyl-4-methyl-6-N-ethylpiperidineiminomethylphenol).
Das, D.; Maiti, P. Bagdi, A. K.; Ghosh, T.; Chattopadhay, T.; Das, S.; Hajra, A.; Majee, A.; Zangrando, E.
IJC-A, 2013, 52A, 863. doi
48. Nano indium oxide catalyzed synthesis of benzimidazole in aqueous media.
Santra, S.; Majee, A. and Hajra, A.
Tetrahedron Lett., 2012, 53, 1974 doi
47. A simple and efficient approach for the sulfonation of indoles catalyzed by CuI.
Rahman, M.; Ghosh, M.; Hajra, A. and Majee. A.
Journal of Sulfur Chemistry, 2013, 34, 342 doi
46. A mild and efficient Synthesis of 1,5- benzo-diazepine derivatives catalysis by acidic ionic liquid in solvent free condition. A. Roy, A. Majee and A. Hajra,
J. Ind. Chem. Soc. 2012, 89, 963. doi
45. Zwitterionic-Type Molten Salt-Catalyzed Multi-Component Reactions: One-Pot Synthesis of Substituted Imidazoles under Solvent-Free Conditions.
Rahman, M.; Bagdi, A. K.; Kundu, D.; Majee, A.; Hajra, A.
J. Heterocycl. Chem.; 2012, 49, 1224 doi
44. Combination of NH2OH.HCl and NaIO4: A new and mild oxidizing agent for selective oxidation of alcohols to carbonyl compounds.
Majee, A.; Kundu, S. K.; Santra, S. and Hajra, A.
Tetrahedron Lett., 2012, 53, 4433. doi
43. An efficient and alternative approach for preparation of O-benzoylozimes using benzoyl peroxide.
Kundu, S. K., Rahman, M., Hajra, A. and Majee, A.
Synth. Commun. 2012, 42, 1848. doi
42. Indium triflate-catalyzed coupling between nitroalkene and phenol/naphthol: a simple and direct synthesis of benzofuran and naphthofuran via cyclization reaction.
Kundu, D.; Majee, A. and Hajra, A.
Chem. Asian J., 2011, 6, 243. doi
41. Nano indium oxide catalyzed efficient synthesis of propargylamines via C-H and C-Cl bond activations.
Rahman, M.; Bagdi, A. K; Majee, A. and Hajra, A.
Tetrahedron Lett.; 2011, 52, 4437. (highlighted in Synfacts, 2011, 1140) doi
40. Zwitterionic-type molten salt: A mild and efficient organocatalyst for the synthesis of 3- aminoalkylated indoles via three-component coupling reaction.
Kundu, D.; Bagdi, A. K.; Majee, A.; Hajra, A.
Synlett 2011, 1165. doi
39. Task-Specific Ionic Liquid-Catalyzed Efficient Couplings of Indoles with 1,3-Dicarbonyl Compounds: An Efficient Synthesis of 3-Alkenylated Indoles.
Santra, S.; Majee, A.; Hajra, A.
Tetrahedron Lett. 2011, 52, 3825. doi
38. A Convenient Synthesis of Coumarins using Reusable Ionic Liquid as Catalyst.
Das, S.; Majee, A.; Hajra, A.
Green Chem. Lett. Rev. 2011, 4, 349. doi
37. One-Pot Multicomponent Synthesis of Polyhydroquinolines under Catalyst and Solvent-Free Conditions.
Das, S.; Santra, S.; Roy, A.; Urinda, S.; Majee, A.; Hajra, A.
Green Chem. Lett. Rev. 2012, 5, 97. doi
36. Formylation without catalyst and solvent at 80°C.
Rahman, M.; Majee, A. and Hajra, A.
Tetrahedron Lett., 2010, 51, 2896. doi
35. Zwitterionic-type molten salt: an efficient mild catalyst for synthesis of 2-amidoalkyl and 2-carbamatoalkyl naphthols.
Kundu, D.; Majee, A. and Hajra, A.
Catal. Commun. 2010, 11, 1157. doi
34. Task-specific ionic liquid catalyzed efficient microwave assisted synthesis of 12-alkyl or aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones under solvent-free conditions.
Kundu, D.; Majee, A. and Hajra, A.
Green Chem. Lett. Rev. 2011, 4, 205. doi
33. Task-specific ionic-liquid catalyzed efficient synthesis of indole derivatives under solvent-free conditions.
Das, S.; Rahman, M.; Majee, A.. and Hajra, A.
Can. J. Chem. 2010, 88, 150. doi
32. Microwave-assisted Bronsted acidic ionic liquid promoted one-pot synthesis of heterobicyclic dihydropyrimidinones.
Rahman, M.; Majee, A. and Hajra, A.
J. Heterocycl. Chem. 2010, 47, 1230. doi
31. Manganese(II) chloride-catalyzed conjugated addition of amines to electron-deficient alkenes in methanol-water medium.
Roy, A.; Majee, A. and Hajra, A.
Open Catal. J. 2010, 3, 34. doi
30. TBAB as efficient catalyst in the synthesis of bis(indolyl)methanes.
Kundu, S. K.; Islam, S.; Hajra, A.; Majee, A.
Russ. J. Org. Chem. 2010, 46, 126. doi
Before 2010
29. Zwitterionic-type molten salt catalyzed syn-selective aza-Henry reaction: Solvent-free one-pot synthesis of β-nitroamine.
Kundu, D.; Debnath R. K.; Majee, A. and Hajra, A.
Tetrahedron Lett. 2009, 50, 6998.
28. Indium triflate-catalyzed one-pot synthesis of 1-substituted-1H-1,2,3,4-tetrazoles under solvent-free conditions.
Kundu, D.; Majee, A. and Hajra, A.
Tetrahedron Lett. 2009, 50, 2668.
27. An Efficient One-Pot Synthesis of Naphthoxazinones by a Three-Component Coupling of Naphthol, Aldehydes, and Urea Catalyzed by Zinc Triflate.
Kundu, D.; Majee, A. and Hajra, A.
J. Heterocycl. Chem. 2009, 46, 1019.
26. Indium Triflate-Catalyzed One-Pot Synthesis of 14-Alkyl or Aryl-14H-dibenzo[a,j ]xanthenes in Water.
Urinda, S.; Kundu, D.; Majee, A. and Hajra, A.
Heteroat. Chem. 2009, 20, 232.
25. Zinc Chloride as an Efficient Catalyst for Chemoselective Dimethyl Acetalization.
Roy, A.; Rahman, M.; Das, S.; Kundu, D.; Kundu, S. K.; Majee, A. and Hajra, A.
Synth. Environmentally Benign Aqueous Zinc Tetrafluoroborate-Catalyzed One-Pot Biginelli Condensation at Room Temperature.
Kundu, S. K.; Majee, A.; and Hajra, A.
Indian J. Chem. 2009, 48B, 408
23. Synthesis of 1,5-benzothiazepines with microwave irradiation under solvent and catalyst-free conditions.
Rahman, M.; Majee, A. and Hajra, A.
J. Chem. Res. 2009, 178
22. A facile synthesis of 2,2,4-trisubstituted-1,2-dihydroquinolines catalyzed by zinc triflate under solvent-free conditions.
Kundu, D.; Majee, A.; Hajra, A. J.
Chin. Chem. Soc., 2008, 55, 1186
21. L-Proline Catalyzed Enamination of β-Dicarbonyl Compounds under Solvent-Free Conditions.
Kundu, D.; Majee, A.; Hajra, A.
Chin. J. Chem. 2008, 26, 1545.
Post-doctoral publication
20. Palladium-catalyzed Aerobic Dehydrogenative Aromatization of Cyclohexanone Imines to Arylamine.
Hajra, A.; Wei, Y.; and Yoshikai*, N.
Org. Lett. 2012, 14, 5488.
19. Aminohydoxyphosphine Ligand for Copper-Catalyzed Enantioselective Conjugated addition of organozinc to enones.
Hajra, A.; Yoshikai, N.; Nakamura*, E.
Org. Lett., 2006, 8, 4153 (Highlighted in Sunfacts, 2007, 67)
18. Synthesis of Chiral a-Fluoroketones through Catalytic Enantioselective Decarboxylation.
Nakamura*, M.; Hajra, A.; Endo, K.; Nakamura*, E.
Angew. Chem. Int. Ed. 2005, 44, 7248. (selected as Very Important Paper). (Synfacts 2006 (01), 0050-0050)
Publications from Ph.D. Research Work
16. Dichloroindium hydride (Cl2InH): A convenient reagent for stereoselective reduction of vic-dibromides to (E) alkenes.
Ranu*, B. C.; Das, A.; Hajra, A.
Synthesis, 2003, 1012.
15. Efficient microwave-assisted synthesis of quinolines and dihydroquinolines under solvent-free condition.
Ranu*, B. C.; Hajra, A.; Dey, S. S.; Jana,U.
Tetrahedron, 2003, 59, 813.
14. Highly efficient acylation of alcohols by acetic anhydride under solvent free and catalyst free condition: a practical and green alternative.
Ranu*, B. C,; Dey, S. S.; Hajra, A.
Green Chem. 2003, 5, 44.
13. Catalysis by an ionic liquid. Efficient conjugate addition of thiols to electron deficient alkenes catalyzed by molten tetrabutylammonium bromide under solvent-free condition.
Ranu*, B. C.; Dey, S. S.; Hajra, A.
Tetrahedron, 2003, 59, 2417.
12. A practical and green approach towards synthesis of Dihydropyrimidinones without any solvent and catalyst.
Ranu*, B. C; Hajra, A.; Dey, S. S.
Org. Process Res. Dev., 2002, 6, 817.
11. Solvent free, catalyst free Michael-type addition of amines to electron deficient alkenes.
Ranu*, B. C.; Dey, S. S.; Hajra, A.
ARKIVOC, 2002, 76.
10. A simple and green procedure for the synthesis of a- amino phosphonate by a one pot three- component condensation of carbonyl compound, amine and diethyl phosphite without solvent & catalyst.
Ranu*, B. C.; Hajra, A.
Green Chem., 2002, 4, 551.
9. Indium trichloride catalyzed one-step synthesis of amino nitriles by a three-component condensation of carbonyl compounds, amines and potassium cyanide.
Ranu* B. C.; Dey, S. S.; Hajra, A.
Tetrahedron 2002, 58, 2529.
8. Unusual cleavage of ethers by thiophenol on the surface of silica gel impregnated with indium chloride under microwave irradiation. An efficient procedure for the synthesis of thioethers through transthioetherification.
Ranu*, B. C.; Samanta, S.; Hajra, A.
Synlett 2002, 987.
7. Indium triiodide catalysed one-step conversion of tetrahydropyranyl ether to acetates with high selectivity. Ranu*, B. C.; Hajra, A.; J. Chem. Soc. Perkin Trans.1, 2001, 355.
6. Highly selective one-pot conversion of THP and MOM ethers to acetates by indium triiodide-catalysed deprotection and subsequent transesterification by ethyl acetate.
Ranu*, B. C.; Hajra, A.
J. Chem. Soc., Perkin Trans. 1, 2001, 2262.
5. Synthesis of alkyl-substituted pyrroles by three-component coupling of carbonyl compound, amine and nitro-alkane/alkene on a solid surface of silica gel/alumina under microwave irradiation.
Ranu*, B. C.; Hajra, A.
Tetrahedron, 2001, 57, 4767.
5. Indium Mediated Allylation of b -Keto Phosphonates.
Ranu*, B. C.; Samanta, S.; Hajra, A.;
J. Org. Chem., 2000, 66, 7519.
4. Microwave-Assisted Synthesis of Substituted Pyrroles by a Three-Component Coupling of α,β-Unsaturated Carbonyl Compounds, Amines and Nitroalkanes on the Surface of Silica Gel.
Ranu*, B. C.; Hajra, A.; Jana, U.
Synlett, 2000, 75.
3. Microwave-assisted simple synthesis of quinolines from anilines and alkyl vinyl ketones on the surface of silica gel in the presence of indium (III) chloride.
Ranu*, B. C.; Hajra, A.; Jana, U.
Tetrahedron Lett., 2000, 41, 531.
2. Indium(III) Chloride-Catalyzed One-Pot Synthesis of Dihydropyrimidinones by a Three-Component Coupling of 1,3-Dicarbonyl Compounds, Aldehydes, and Urea: An Improved Procedure for the Biginelli Reaction.
Ranu*, B. C.; Hajra, A.; Jana, U.
J. Org. Chem., 2000, 65, 6270.
1. General Procedure for the Synthesis of α-Amino Phosphonates from Aldehydes and Ketones Using Indium (III) Chloride as a Catalyst.
Ranu*, B. C.; Hajra, A.; Jana, U.
Org. Lett. 1999, 1, 1141.