Abstract A Hofmann‐Löffler‐Freytag type cyclization reaction of S ‐aryl‐ S ‐phenylpropyl sulfoximines (and related derivatives) was developed. Using molecular iodine as the initiator under visible light a series of five‐membered cyclic products was obtained in moderate to high yields. The approach represents a new strategy for the synthesis of dihydroisothiazole oxides and benzo[ d ]isothiazoles‐1‐oxides. magnified image