5-fluorovaleric acid

Electrolytic decarboxylative coupling of sodium salts of carboxylic acids takes place during their electrolysis. Carbon dioxide is eliminated, and the free radicals thus generated couple to form hydrocarbons or their derivatives. The reaction is referred to as the Kolbe electrosynthesis and is exemplified by the synthesis of 1,8-difluorooctane from 5-fluorovaleric acid (equation 469) [574]. Yields of homologous halogenated acids range from 31% to 82% [574]. 

Mazalov, S.A. Sokolov, S.V. Methods of preparation and properties of organofluorine compounds. IV. A-a,a-Dichlorononafluoroamylimino chloride of (0,(0,(0-trichlorohexa-fluorovaleric acid. Zh. Obshch. Khim. 1966, 36(7), 1330-1337. 

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