Divergent synthesis of quinoxalin-2(1H)-one derivatives through photoinduced C–H functionalization without a photocatalyst

Abstract

Herein, we report a visible-light-driven divergent transformation of quinoxalin-2(1H)-ones mediated using H₂O₂ as a green oxidant. This reaction is controlled by the reaction atmosphere, providing 3-alkylquinoxalin-2(1H)-ones and quinoxaline-2,3(1H,4H)-diones in moderate to excellent yields, respectively. This method shows broad substrate scope, high atom economy and mild conditions.