Process for preparing perfluoroalkanesulfonyl fluorides

Details Process for preparing perfluoroalkanesulfonyl fluorides Process for preparing perfluoroalkanesulfonyl fluorides

1993-06-30

1994-06-07

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204 72, 562825, C25B 124, C25B 308

Patent

active

053186745

ABSTRACT:
A process for preparing perfluoroalkanesulfonyl fluorides, e.g., perfluoromethanesulfonyl fluoride, comprises electrochemically fluorinating 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.

REFERENCES:
patent: 2519983 (1950-08-01), Simons
patent: 2713593 (1955-07-01), Brice et al.
patent: 2732398 (1956-01-01), Brice et al.
patent: 2852554 (1958-09-01), England
patent: 3028321 (1962-04-01), Danielson et al.
patent: 3250808 (1966-05-01), Moore et al.
patent: 3692643 (1972-09-01), Holland
patent: 4332954 (1982-06-01), Koshar
patent: 4425199 (1984-01-01), Hamada et al.
patent: 4739103 (1988-04-01), Hansen et al.
patent: 4962282 (1990-10-01), Marraccini et al.
England, D. C., et al., J. Am. Chem. Soc., 82, 6181-88 (1960).
Howells, R. D. and J. D. McCown, Chem. Rev., 77, 69 (1977).
Kirk-Othmer Encyclopedia of Chemical Technology, Fourth Edition, vol. 3, p. 1017, John Wiley & Sons, New York, (1992).
Knunyants, I. L. and G. A. Sokolski, Angew. Chem. Int. Ed. Engl., 11, 583-85 (1972).
Mohtasham,J. and G. L. Gard, Coord. Chem. Reviews 112, 49-55 (1992).
Novikova, M. et al., J. Fluorine Chem., 58, 326 (1992).
Simons, J. H. (Editor), Fluorine Chemistry, vol. 1, pp. 416-418 (1950), Academic Press, Inc.
Stang, P. J. and M. R. White, Aldrichimica Acta, 16, 15 (1983).
Volkov, N. D. et al., Synthesis, 972 (1979).

Affiliated with

Also associated with

Rating

Process for preparing perfluoroalkanesulfonyl fluorides does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing perfluoroalkanesulfonyl fluorides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing perfluoroalkanesulfonyl fluorides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-790737