Visible‐Light‐Promoted Electron Donor‐Acceptor Complex Enabled Decarboxylative Alkylation of Quinoxalin‐2(1<i>H</i>)‐ones and <i>N</i>‐Hydroxyphthalimide Esters with Na₂S as a Catalytic Donor

Abstract

Abstract We developed a novel and efficient method for the synthesis of various 3‐alkylated quinoxalin‐2(1 H )‐ones (32 examples, 70%–96% yields) through electron donor‐acceptor complex enabled alkylation of quinoxalin‐2(1 H )‐ones with N ‐ hydroxyphthalimide esters as the alkyl source and Na 2 S as the catalytic electron donor under external photocatalyst‐, oxidant‐ and additive‐free conditions.