Open Access
CC BY-NC-ND 4.0 · SynOpen 2020; 04(03): 55-61
DOI: 10.1055/s-0040-1707203
paper
This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/) (2020) The Author(s)

Synthesis of Quinoxalin-2(1H)-ones and Hexahydroquinoxalin-2(1H)-ones via Oxidative Amidation–Heterocycloannulation

Authors

  • Akula Raghunadh

    a   Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad 560049, India
  • Krishnaji Tadiparthi

    b   Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore 560026, India   Email: krishnaji.tadiparthi@christuniversity.in
  • Suresh Babu Meruva

    a   Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad 560049, India
  • V. Narayana Murthy

    a   Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad 560049, India
  • L. Vaikunta Rao

    c   Department of Chemistry, GIS, GITAM University, Visakhapatnam 530045, India
  • U. K. Syam Kumar

    a   Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad 560049, India

Dr. Krishnaji acknowledges CHRIST (Deemed to be University) for funding through a Major Research Project (MRP # MRPDSC-1723).
Further Information

Publication History

Received: 02 June 2020

Accepted after revision: 30 June 2020

Publication Date:
18 August 2020 (online)


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Abstract

A metal-catalyst-free synthesis of substituted quinoxalin-2-ones from 2,2-dibromo-1-arylethanone by employing an oxidative amidation–heterocycloannulation protocol is reported. The substrate scope of the reaction has been demonstrated and a possible mechanism for this reaction has also been proposed.

Supporting Information