Preparation of hexafluoropropene oligomers

Details Preparation of hexafluoropropene oligomers Preparation of hexafluoropropene oligomers

C - Chemistry, Metallurgy

07

C

C07C 21/18 (2006.01) C07C 17/26 (2006.01) C07C 17/281 (2006.01)

Patent

CA 2110530

Abstract A process for the oligomerization of hexafluoropropene comprises contacting hexafluoropropene with a catalyst or a mixture of catalysts selected from the group consisting of the cyanide, cyanate, and thiocyanate salts of alkali metals, quaternary ammonium, and quaternary phosphonium, in the presence of polar, aprotic solvent, e.g., acetonitrile. The process of the invention is especially useful for selectively preparing hexafluoropropene dimers, e.g., perfluoro-2-methyl-2-pentene and perfluoro-2-methyl-3-pentene, in good yield by the proper choice of solvent and catalyst.

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