Palladium‐Catalyzed Trifluoromethylthiolation of Chelation‐Assisted C–H Bonds

An efficient palladium‐catalyzed trifluoromethylthiolation of chelation‐assisted C–H bonds has been accomplished by employing a readily accessible trifluoromethylthiolating reagent. The reaction tolerates various directing groups and functional groups and allows the access to diverse trifluoromethylthiolated arenes in good yield. A plausible mechanism was proposed based on preliminary mechanistic investigations.