Fluorine-containing epoxides are important intermediates in the synthesis of surfactants, oligomers, and polymers with special properties.'Since most polyfluorinated olefins are too deactivated for direct electrophilic epoxidation, their epoxides are usually made by either using special catalysts or employing indirect methods. For example, our attempts to epoxidize the electron deficient double bond of 3, 3, 4, 4, 5, 5, 6, 6, 6-nonafluorohexene (1 ...