Synthesis 2019; 51(22): 4113-4136
DOI: 10.1055/s-0037-1611910
review
© Georg Thieme Verlag Stuttgart · New York

Recent Developments in Direct C–H Functionalization of Quinoxalin-2(1H)-ones via Radical Addition Processes

a   Department of Chemistry, School of Chemical Sciences, Central University of Haryana, Mahendergarh-123031, Haryana, India
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a   Department of Chemistry, School of Chemical Sciences, Central University of Haryana, Mahendergarh-123031, Haryana, India
b   Discipline of Chemistry, Indian Institute of Technology Indore, Simrol Indore-453552, Madhya Pradesh, India   Email: selva@iiti.ac.in
› Author Affiliations
M. thanks the Council of Scientific & Industrial Research (CSIR), New Delhi, India, for a research fellowship. S.S. thanks the Scientific and Engineering Research Board (SERB), New Delhi, India (ECR/2018/000413) for financial support and the University Grants Commission (UGC), New Delhi, for a UGC-FRP faculty award [F.4-5(3-FRP)/2017(BSR)].
Further Information

Publication History

Received: 15 June 2019

Accepted after revision: 22 July 2019

Publication Date:
24 September 2019 (online)


Dedicated to Professor Vinod K. Singh, IIT Kanpur on the occasion of his 60th birthday

Abstract

This review article covers the recent developments in direct C–H functionalization of quinoxalin-2(1H)-one derivatives via radical additions at the C3 position. Reaction types have been categorized depending on the kind of radical used, with representative examples and insightful mechanistic details provided.

1 Introduction

2 Reactions with Alkyl Radicals

3 Reactions with Acyl Radicals

4 Reactions with Aryl Radicals

5 Reactions with Perfluoroalkyl Radicals

6 Reactions with Alkoxycarbonyl Radicals

7 Reactions with Nitrogen Radicals

8 Reactions with Oxygen Radicals

9 Reactions with Phosphorus Radicals

10 Conclusion