Electrophotocatalytic C−H Heterofunctionalization of Arenes

Abstract The electrophotocatalytic heterofunctionalization of arenes is described. Using 2,3‐dichloro‐5,6‐dicyanoquinone (DDQ) under a mild electrochemical potential with visible‐light irradiation, arenes undergo oxidant‐free hydroxylation, alkoxylation, and amination with high chemoselectivity. In addition to batch reactions, an electrophotocatalytic recirculating flow process is demonstrated, enabling the conversion of benzene to phenol on a gram scale.