Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic anhydrides group
Patent
1996-12-20
1998-09-15
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic anhydrides group
C07F 902
Patent
active
058081496
ABSTRACT:
The present invention relates to a method for producing a fluoroalkylsulfonic acid anhydride represented by a general formula of (C.sub.n F.sub.2n+1 SO.sub.2).sub.2 O where n is an integer ranging from 1 to 8. This method includes a step of (a) reacting diphosphorus pentoxide with a fluoroalkylsulfonic acid represented by a general formula of C.sub.n F.sub.2n+1 SO.sub.3 H where n is an integer ranging from 1 to 8, in a fluorine-containing solvent, thereby to form the fluoroalkylsulfonic acid anhydride in the fluorine-containing solvent. A fluoroalkylsulfonic acid anhydride produced by this method is high in purity and yield.
REFERENCES:
patent: 5004829 (1991-04-01), Aramaki et al.
Kita Yasushi
Nakamura Tamio
Okabayashi Shoji
Okamura Seigo
Tainaka Masahiro
Central Glass Company Limited
Killos Paul J.
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