Antimony pentafluoride in the synthesis of novel fluoro-alkene derivatives and a novel approach to conjugated polymers

Abstract

Elimination of hydrogen fluoride, using antimony pentafluoride, is a useful preparative process for some fluorinated alkenes and presents a new and simple approach to conjugated polymers. H I

The Chemistry of Highly Fluorinated Carbocations

“…Polyfluoroalkanes are generally more resistant to the action of acids, but there are several reported examples of this type of reaction. Di- and polyhydrofluoroalkanes with SbF 5 at elevated temperatures are reported to form olefins. −

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“…Di-and polyhydrofluoroalkanes with SbF 5 at elevated temperatures are reported to form olefins. [193][194][195] Both of these types of elimination of HF probably involve formation of carbocations as intermediate. In fact, the formation of quite stable 195 preparing uniform solutions of starting material in excess of antimony fluoride.…”