Hypofluorites and bis-hypofluorites, and process for preparing same

摘要

Mono- and bis-hypofluorites respectively of formula: FO2S-Rf-CF2OF and FOCF2-R'f-CF2OF wherein Rf is perfluoroalkylene or perfluorochloroalkylene and R'f is a perfluoroalkylene or perfluorooxyalkylene, and process for preparing them, which is conducted continuously, at a temperature from 0 DEG to 60 DEG C. and comprises starting from the respective acyl fluorides <IMAGE> by reaction of fluorine in the gas phase in the presence of a catalyst consisting of K, Rb, Cs or Ba fluoride, preferably supported on a metal material.