Preparation of hexafluoropropene oligomers

Details Preparation of hexafluoropropene oligomers Preparation of hexafluoropropene oligomers

1992-12-28

1993-10-19

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570126, 570136, C07C 1726, C07C 2118

Patent

active

052547744

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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