PERFLUOROALKYLDICHLOROETHYLENES AND PRODUCTION OF PERFLUOROALKANECARBOXYLIC ACIDS

PERFLUOROALKYLDICHLOROETHYLENES AND PRODUCTION OF PERFLUOROALKANECARBOXYLIC ACIDS

1. Process for preparing perfluoroalkane-carboxylic acids RF CO2 H wherein RF denotes a straight-chain or branched perfluoroalkyl radical containing from 1 to 20 carbon atoms, characterized in that a perfluoroiodo-alkane RF I is reacted with trichloroethylene in an acidic solvent in the presence of...

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Bibliographische Detailangaben
Hauptverfasser: HUBERT BLANCOU, AUGUSTE COMMEYRAS, ROBERT TEISSEDRE
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:1. Process for preparing perfluoroalkane-carboxylic acids RF CO2 H wherein RF denotes a straight-chain or branched perfluoroalkyl radical containing from 1 to 20 carbon atoms, characterized in that a perfluoroiodo-alkane RF I is reacted with trichloroethylene in an acidic solvent in the presence of zinc, and then the resulting 2-perfluoroalkyl-1,1-dichloroethylene RF CH = CCI2 is oxidised in a basic medium with the aid of potassium or sodium permanganate at a temperature of at least 80 degrees C.