Process for preparing perfluoroalkenyl-sulfonyl fluorides

Details Process for preparing perfluoroalkenyl-sulfonyl fluorides Process for preparing perfluoroalkenyl-sulfonyl fluorides

C - Chemistry, Metallurgy

07

C

260/538.4

C07C 303/22 (2006.01) C07C 309/81 (2006.01)

Patent

CA 2015523

ABSTRACT OF THE DISCLOSURE Process for the synthesis of perfluoroalkenyl-sulfonyl fluorides of formula: Rf-CF=CF-S02F wherein: Rf is F or a perfluoroalkyl 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.

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