Process for Preparing Perfluoroalkenyl-Sulfonyl Fluorides
US Patent: 50103050 A
Date: Apr. 7 1992
Inventors: W. Navarrini, S. Modena
ABSTRACT
A continuous process for preparing perfluoroalkenyl sulfonyl fluorides (I)
Rf-CF=CF-SO2F (I)
wherein: Rf is selected from the group consisting of F and a perfluoroalkyl radical of from 1 to 9 carbon atoms is disclosed, in which as the starting compound a sultone (II) 
(II)
is used. The starting compound is placed into contact with a reactant selected from the group consisting of oxides and carbonates of an element of the Goups IA, IIA and IIB, and of the oxides of an element of the Groups IIIA and IVA of the Periodic Table of the Elements, and their mixtures, at a temperature comprised within the range of from 150 to 450 C, and the compound (I) is recovered from the reaction effluent.
