Intermolecular Sulfenoamination of Alkenes with Free‐Thiols and NIS to Access <i>β</i>‐Succinimide Sulfides

A convenient and practical multicomponent strategy for the sulfenoamination of alkenes was realized, which using free-thiols as the sulfur-reagent, NIS both as radical initiator and an N-nucleophile. This protocol excellent in terms of transition-metal-free, good functional group tolerance, easily available substrates and facile scale-up. And provided a direct- and general way to synthesize various β-succinimide sulfides with high regioselectivity.