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Atanu Patra
Researcher at National Chemical Laboratory
Publications - 27
Citations - 642
Atanu Patra is an academic researcher from National Chemical Laboratory. The author has contributed to research in topics: Catalysis & Carbene. The author has an hindex of 12, co-authored 21 publications receiving 496 citations. Previous affiliations of Atanu Patra include Council of Scientific and Industrial Research & Academy of Scientific and Innovative Research.
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Journal ArticleDOI
Recent Advances in the N-Heterocyclic Carbene (NHC)-Organocatalyzed Stetter Reaction and Related Chemistry
TL;DR: In this paper, the Stetter reaction has been used in the N-heterocyclic carbene (NHC)-catalyzed umpolung of aldehydes followed by their interception with activated carbon-carbon double bonds.
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Enantioselective N-Heterocyclic Carbene-Catalyzed Annulations of 2-Bromoenals with 1,3-Dicarbonyl Compounds and Enamines via Chiral α,β-Unsaturated Acylazoliums
Santhivardhana Reddy Yetra,Anup Bhunia,Atanu Patra,Manoj V. Mane,Kumar Vanka,Akkattu T. Biju +5 more
TL;DR: In this article, the N-heterocyclic carbene (NHC)-cata- lyzed generation of chiral a,b-unsaturated acylazoli- ums from 2-bromoenals followed by their intercep- tion with 1,3-dicarbonyl compounds or enamines, the formal (3+3) annulation reaction was reported.
Journal ArticleDOI
N-Heterocyclic-Carbene-Catalyzed Umpolung of Imines
Atanu Patra,Atanu Patra,Subrata Mukherjee,Subrata Mukherjee,Tamal Das,Tamal Das,Shailja Jain,Rajesh G. Gonnade,Akkattu T. Biju,Akkattu T. Biju +9 more
TL;DR: The NHC-catalyzed intramolecular cyclization of aldimines bearing a Michael acceptor resulted in the formation of biologically important 2-(hetero)aryl indole 3-acetic-acid derivatives in moderate to good yields.
Journal ArticleDOI
N-Heterocyclic carbene-catalyzed enantioselective synthesis of functionalized cyclopentenes via α,β-unsaturated acyl azoliums
Santigopal Mondal,Santhivardhana Reddy Yetra,Atanu Patra,Sunita S. Kunte,Rajesh G. Gonnade,Akkattu T. Biju +5 more
TL;DR: The organocascade reaction of modified enals with malonic ester derivatives having a γ-benzoyl group involves the Michael-intramolecular aldol-β-lactonization-decarboxylation sequence to deliver cyclopentenes in good yields and excellent ee values.
Journal ArticleDOI
Synthesis of 4-Difluoromethylquinolines by NHC-Catalyzed Umpolung of Imines
Atanu Patra,Atanu Patra,Fabien Gelat,Xavier Pannecoucke,Thomas Poisson,Thomas Poisson,Tatiana Besset,Akkattu T. Biju +7 more
TL;DR: The N-heterocyclic carbene (NHC)-catalyzed umpolung of aldimines for the synthesis of 4-difluoromethylquinoline derivatives is reported and the key to the success is the NHC generated from the bicyclic triazolium salt using DBU as the base.