Dual palladium–photoredox catalyzed chemoselective C–H arylation of phenylureas

Abstract

A highly chemoselective C–H arylation of phenylureas has been accomplished using dual palladium–photoredox catalysis at room temperature without any additives, base or external oxidants. Regioselective C–H arylation of N,N′-diaryl substituted unsymmetrical phenylureas has also been accomplished by a careful choice of aryl groups.