Fluorination with xenon difluoride. Part 18. Reactivity of diphenyl sulphide and substituted thiochromanones

Abstract

The fluorination of diphenyl sulphide with 1 mol. equiv. of xenon difluoride resulted in formation of diphenyl sulphoxide, while reaction with 2 mol. equiv. of xenon difluoride gave diphenyl sulphone after hydrolysis. Reaction with 3-bromothiochroman-4-one resulted in the formation of 3-bromothiochromen-4-one, while fluorination of 3,3-dibromothiochroman-4-one yielded 3,3-dibromo-2-fluorothiochroman-4-one. The formation of di- and tetrafluoropersulphuranes, which were not isolated, is suggested.