Process for preparing perfluoroalkoxysulphonic compounds
This invention relates to a process for preparing perfluoroalkoxysulphonic compounds having formula: Rf(OC2F4SO2X)p (I) wherein Rf represents a perfluoroalkyl or perfluoroethereal group, X represents F, OH or OM, in which M is an alkaline cation, an alkaline-earth cation, or X represents NR1R2, in w...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
20.12.1994
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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Summary: | This invention relates to a process for preparing perfluoroalkoxysulphonic compounds having formula: Rf(OC2F4SO2X)p (I) wherein Rf represents a perfluoroalkyl or perfluoroethereal group, X represents F, OH or OM, in which M is an alkaline cation, an alkaline-earth cation, or X represents NR1R2, in which R1 and R2, independently of each other, represent H or an alkyl group containing from 1 to 5 carbon atoms and p is a number selected from 1 to 2, characterized in that the perfluoro vinyl sulphonyl fluoride of formula (II) CF2=CF-SO2F is reacted with a hypofluorite of formula (III): Rf(OF)r (III) wherein Rf is the same as defined above, and r represents 1 or 2, optionally in an inert solvent, at a temperature approximately ranging from -140 DEG C. to +40 DEG C., and in that, if so desired, from the compound of formula (I) so obtained in which X=F, the corresponding derivatives, in which X has the other meaning as defined above, are obtained by means of conventional techniques. |
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Bibliography: | Application Number: US19930059858 |