Process for preparing perfluoroalkanesulfonyl fluorides

Details Process for preparing perfluoroalkanesulfonyl fluorides Process for preparing perfluoroalkanesulfonyl fluorides

1994-10-11

1996-01-23

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204 81, C25B 300, C25B 308

Patent

active

054862710

ABSTRACT:
A process for preparing perfluoroalkanesulfonyl fluorides, e.g., perfluoromethanesulfonyl fluoride, is described which comprises electrochemically fluorinating in the presence of anhydrous hydrogen fluoride mono-, di- or tri- alkylsulfonyl alkyl esters or amides, or mono-, bis- or tris- alkylsulfonyl alkanes or disulfones. The process can be used to prepare perfluoroalkanesulfonyl fluorides in good yield and can be 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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