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1. Photoredox-catalyzed three-component difluorobenzylation of quinoxalin-2(1H)-ones with unactivated vinylarenes and BrCF2CO2Et/HCF2CO2H.

Author

Shen, Lu, Yuan, Jin-Wei, Zhang, Bing, Song, Sai-Yi, Yang, Liang-Ru, Xiao, Yong-Mei, Zhang, Shou-Ren, and Qu, Ling-Bo

Subjects
*CARBON-carbon bonds, *RADICALS (Chemistry), *FUNCTIONAL groups
Abstract

An environmentally friendly strategy for the photo-catalyzed three-component reaction between quinoxalin-2(1H)-ones, vinylarenes, with inexpensive and easily accessible ethyl bromodifluoroacetate/sodium difluoromethanesulfinate is described. This protocol exhibits mild conditions, high efficiency, and excellent functional group tolerance, providing a highly efficient approach for the synthesis of difluorobenzylated quinoxalin-2(1H)-ones by the formation of two carbon-carbon bonds. A radical mechanism is responsible for this three-component transformation. [ABSTRACT FROM AUTHOR]

Published
2023
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