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
Key words
C–H functionalization - quinoxalin-2(1
H)-ones - visible light photocatalysis - radicals - oxidants