| 摘要 |
A process for preparing perfluoroalkanesulfonyl fluorides, e.g., perfluoromethanesulfonyl fluoride, comprises electrochemically fluroinating in the presence of anhydrous hydrogen fluoride at least one precursor compound selected from the group consisting of alpha , beta -difluoroalkane- beta -sultones, e.g., 1,1,2,2-tetrafluoroethane sultone, and the corresponding alpha -halocarbonylfluoroalkanesulfonyl halides, e.g., fluorocarbonyldifluoromethanesulfonyl fluoride. The process can be used to prepare perfluoroalkanesulfonyl fluorides in good yield and can be, for example, both more electrically-efficient and more fluorine-efficient than the conventional preparative method involving the electrochemical fluorination of hydrocarbon alkanesulfonyl halides.
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