Abstract
1. A convenient method was developed for obtaining pure hexafluoropropylene oxide, and specifically by the oxidation of hexafluoropropylene with chromic anhydride in fluorosulfonic acid as the medium. 2. New convenient methods were developed for obtaining fluorosulfonoxypentafluoroacetone by the addition of fluorosulfonic acid to hexafluoropropylene oxide, and it was shown that the electrophilic opening of the epoxide ring of hexafluoropropylene oxide is made substantially easier in the presence of trivalent chromium cations. 3. The previously unknown rearrangement of fluorosulfonoxypentafluoroacetone, with a shift of the fluorosulfonyl group, was discovered.
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