Аннотация:A method has been developed for the synthesis of thiosulfonates by the electrophilic addition of S-tosylsulfenamides to ole-fins or their electrophilic substitution in aromatic systems. SO3, Py.SO3, and BF3.Et2O were used as activators. The addition of S-tosylsulfenamides to olefins proceeds through electrophilic trans addition.