Synthesis of Thiosulfonates by I2/TBHP‐mediated the Ring‐opening/coupling Reaction of Benzothiazole

Abstract A novel I 2 /TBHP (tert‐Butyl hydroperoxide)‐mediated the ring‐opening/coupling reaction of benzothiazole with sulfonyl hydrazides is disclosed. Various aryl, heteraryl and alkyl sulfonyl hydrazides are applied for the reaction and the corresponding thiosulfonates are obtained in moderate to good yields. It provides a mild and convenient way for the synthesis of thiosulfonates.