prov:value
| - A subclass of the fluorinated carbonyl compounds useful in the process of this invention can be represented by the formula ##STR5## where X is H, F, Cl, Br, ##STR6## where R is a lower alkyl group having 1 to 8 carbon atoms, FSO2 --, or ##STR7## and Rf, is a perfluoroalkylene group, having 1 to 20 carbon atoms, which is substantially perfluorinated and can be linear, branched or cyclic, and which
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