Transition-Metal-Free Direct C–H Arylation of Quinoxalin-2(1<i>H</i>)‑ones with Diaryliodonium Salts at Room Temperature

Abstract

A method of synthesizing 3-arylquinoxalin-2­(1<i>H</i>)-ones using diaryliodonium tetrafluoroborates under mild conditions is described. This protocol has a wide substrate scope and enables direct C–H functionalization. The synthetic potential of this coupling was explored using a range of readily accessible diaryliodonium salts and quinoxalin-2­(1<i>H</i>)-ones