Process for Preparing Perfluoroalkenyl-Sulfonyl Fluorides
US Patent: 5103049 A
Date: Apr. 7 1992
Inventors: W. Navarrini, D. D. Desmarteu
ABSTRACT
Process for the synthesis of perfluoroalkenyl-sulfonyl fluorides of formula:
Rf-CF=CF-SO2F
wherein:
Rf is F or a perfluoroalkyl group of from 1 to 9 carbon atoms, consisting in bringing a perfluoroalkyl-(sulfonyl fluoride) monofluoroacetyl-fluoride of formula Rf-CF2-CF(COF)-SO2F into contact with a reactant constituted by a carbonate of a metal belonging to Groups IA, IIA and IIB of the Periodical Table of the Elements at a temperature comprised within the range of from 150 to 400 C, and then recovering the desired product. The process is run in continuous.
