Electrochemical fluorosulfation of perfluoroalkyl vinyl ethers

The reaction of perfluoroalkyl vinyl ethers with electrochemically generated peroxydisulfuryl difluoride produces a mixture of α,ω-bis-fluorosulfonyloxy(perfluoroalkoxyalkanes). The fluorosulfate dimers of the starting vinyl ethers prevailing in the reaction mixture were transformed into perfluoro-2,3-dialkoxysuccinyl difluorides. High stability of intermediate radicals, in which the radical center is adjacent to the oxygen atom, is one of the factors determining the compositions of the reaction products.