Copper‐Catalyzed Benzylic C—H Functionalization,Oxidation and Cyclization of Methylarenes: Direct Access to 2‐Arylbenzothiazoles

The direct C—H functionalization of methylarenes is of great significance. Herein, a copper‐catalyzed oxidative C—N/C—S bond formation through benzylic C(sp³)—H functionalization, oxidation and cyclization of methylarenes is reported. Various 2‐arylbenzothiazoles have been synthesized in moderate to excellent yields with readily available o‐iodoaniline, potassium sulfide, and methylarenes as raw materials.