Process for preparing polyfluorocarboxylic acid chlorides and pe

Details Process for preparing polyfluorocarboxylic acid chlorides and pe Process for preparing polyfluorocarboxylic acid chlorides and pe

1994-08-10

1996-08-13

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415787, 20415789, 20415794, 562541, 562602, 562605, 562859, C07B 3300

Patent

active

055452981

ABSTRACT:
A process for preparing compounds corresponding to the formula RCFXC(O)Cl, in which X is fluorine or chlorine and R is fluorine or a perfluorinated C1- C10-alkyl group, preferably chlorodifluoroacetyl chloride, by photochemical oxidation of R122 (CF.sub.2 ClCHCl.sub.2) and the preparation of trifluoroacetyl chloride by photochemical oxidation of R123 (CF.sub.3 CHCl.sub.2) with oxygen under irradiation. The reaction is preferably carried out without pressurization and without addition of elemental chlorine.

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CA 82:97680 Dittman, "Trifluoroacetyl chloride."
G. A. Wheaton et al., "Methyl Chlorodiflouroacetate...", J. Fluorine Chem., vol. 8, pp. 97-100, (1976).
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Derwent Abstract of JP 04-210, 653.

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