Metal-free oxidative coupling of quinoxalin-2(1H)-ones with arylaldehydes leading to 3-acylated quinoxalin-2(1H)-ones

An efficient protocol for the synthesis of 3-aroylquinoxalin-2(1H)-ones has been developed via a metal-free oxidative cross-coupling reaction of quinoxalin-2(1H)-ones with aryl aldehydes under mild conditions with good yields.