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US 4,362,672 AGranted
Process for producing difluorohaloacetyl fluoride
AssigneeAsahi Glass Company, Limited
InventorsMasaaki Yamabe, Seiji Munekata, Shunichi Samejima
Life of this patent
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Abstract
A difluorohaloacetyl fluoride is produced by (a) producing an intermediate having a group of the formula XCF.sub.2 CFYOSO.sub.2.sup.- wherein X is I or Br, Y is F, Cl, Br or I; by reacting a polyfluoroethylene of the formula CF.sub.2 .dbd.CFY with a reagent obtained by mixing sulfur trioxide with a halogen selected from iodine and bromine; and (b) decomposing said intermediate into said product.
Claims11
A process for producing a difluorohaloacetyl fluoride which comprises the steps of:
- (a) producing an intermediate having a group of the formula
- XCF.sub.2 CFYOSO.sub.2.sup.-
- wherein X is I or Br, Y is F, Cl, Br or I;
- by reacting a polyfluoroethylene of the formula
- CF.sub.2 .dbd.CFY
- with a reagent obtained by mixing sulfur trioxide with a halogen selected from iodine and bromine;
- and
- (b) decomposing said intermediate into said product.
5 more elements
Dependencies are inferred from the claim text.