List of works - Saumen Hajra

An asymmetric acetate-Mannich reaction of chiral isatin derived ketimines and its applications

scientific article published on 01 November 2017

Aqueous tert-Butyl Hydroperoxide Mediated Regioselective Ring-Opening Reactions of Spiro-aziridine-epoxy Oxindoles: Synthesis of 3-Peroxy-3-substituted Oxindoles and Their Acid-Mediated Rearrangement

scientific article published on 10 December 2019

Catalyst-Free "On-Water" Regio- and Stereospecific Ring-Opening of Spiroaziridine Oxindole: Enantiopure Synthesis of Unsymmetrical 3,3'-Bisindoles

scientific article published on 18 July 2017

Catalyst-Free Ring Opening of Spiroaziridine Oxindoles by Heteronucleophiles: An Approach to the Synthesis of Enantiopure 3-Substituted Oxindoles

scientific article published on 13 March 2018

Catalyst-Free Stereocontrolled Formal [3 + 2]-Cycloaddition of CO2 for the Synthesis of Enantiopure Spiro[indoline-3,5'-oxazolidine]-2,2'-diones under Aqueous and Ambient Conditions

scientific article published on 16 June 2020

Catalytic Enantioselective Synthesis of (-)-Podophyllotoxin

scientific article published on 6 December 2017

Controlling the regioselectivity of the ring opening of spiro-epoxyoxindoles for efficient synthesis of C(3)-N(1')-bisindoles and C(3)-N(1')-diindolylmethane

scientific article published on 06 August 2019

Domino Corey-Chaykovsky Reaction for One-Pot Access to Spirocyclopropyl Oxindoles

scientific article published on 23 July 2018

Feedback Inhibition in Chemical Catalysis Leads the Dynamic Kinetic to Kinetic Resolution in C3-Indolylation of Spiro-epoxyoxindoles

scientific article published on 05 February 2020

One-Pot Synthesis of Enantiopure Spiro[3,4-dihydrobenzo[b][1,4]oxazine-2,3'-oxindole] via Regio- and Stereoselective Tandem Ring Opening/Cyclization of Spiroaziridine Oxindoles with Bromophenols

scientific article published on 30 July 2019

Organocatalytic Domino Reaction of Spiroaziridine Oxindoles and Malononitrile for the Enantiopure Synthesis of Spiro[dihydropyrrole-3,3'-oxindoles]

scientific article published on 12 June 2019

Organocatalytic Enantioselective Mukaiyama-Mannich Reaction of Isatin-Derived Ketimines for the Synthesis of Oxindolyl-β3, 3 -Amino Acid Esters

scientific article published on 16 October 2019

Quinine-Based Trifunctional Organocatalyst for Tandem Aza-Henry Reaction-Cyclization: Asymmetric Synthesis of Spiroxindole-Pyrrolidine/Piperidines

scientific article published on 29 August 2017

Reagent-Controlled Reversal of Regioselectivity in Nucleophilic Fluorination of Spiro-epoxyoxindole: Synthesis of 3-Fluoro-3-hydroxymethyloxindole and 3-Aryl-3-fluoromethyloxindole

scientific article published on 01 February 2019

Reversal of Selectivity in C3-Allylation and Formal [3 + 2]-Cycloaddition of Spiro-epoxyoxindole: Unified Synthesis of Spiro-furanooxindole, (±)-N-Methylcoerulescine, (±)-Physovenine, and 3a-Allylhexahydropyrrolo[2,3-b]indole

scientific article published on 06 April 2017

Stereocontrolled Nucleophilic Fluorination at the Tertiary sp-Carbon Center for Enantiopure Synthesis of 3-Fluorooxindoles

scientific article published on 10 October 2018

The one pot asymmetric synthesis of 3,3'-pyrrolidonyl spiroxindoles via a regio- and stereoselective domino reaction

scientific article published on 21 August 2019

Unified total synthesis of (+)-chinensiolide B and (+)-8-epigrosheimin

scientific article published on 01 August 2017

List of works by Saumen Hajra