Preparation of perfluoroalkanecarboxylic acids and novel perfluoroalkanedichloroethylenes obtained
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United States of America Patent
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Mar 6, 1990
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Feb 8, 1985
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Feb 14, 1984
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Abstract
A process for preparing perfluoroalkanecarboxylic acids, wherein a perfluoroiodoalkane, R.sub.F I, is reacted with trichloroethylene in an acidic solvent in the presence of zinc, and the 2-perfluoroalkyl-1,1-dichloroethylene thus obtained is oxidized with the aid of permanganate, R.sub.F representing a straight chain or branched perfluoro radical containing one to 20 carbon atoms, together with certain novel perfluoroalkyldichloroethylenes having four or more carbon atoms so obtained.
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