Synthesis of Aryl Sulfides: Metal‐Free C—H Sulfenylation of Electron‐Rich Arenes.

A simple, efficient, and practical metal-free C–H sulfenylation of substituted electron-rich arenes has been developed. This method is highly regioselective, and the corresponding aryl sulfides were obtained in moderate to excellent yields from stable and readily accessible N-(alkylthio)- and N-(arylthio)succinimides at room temperature in the presence of TFA.