Electrolytic preparation of perfluoroalkanoic acids, perfluoroal

Details Electrolytic preparation of perfluoroalkanoic acids, perfluoroal Electrolytic preparation of perfluoroalkanoic acids, perfluoroal

1985-10-15

1987-03-03

Chapman, Terryence

Chemistry: electrical and wave energy

Processes and products

C25B 304

Patent

active

046473505

ABSTRACT:
Perfluoroalkanoic acids and perfluoroalkanols are prepared by electrolysis of perfluoroalkyl chlorides in the presence of carbon dioxide or an aldehyde, for example, trifluoroacetic acid is obtained from chlorotrifluoromethane and carbon dioxide while trifluoroethanol is obtained from chlorotrifluoromethane and formaldehyde.

REFERENCES:
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patent: 4038310 (1977-07-01), Bjornson et al.
patent: 4460512 (1984-07-01), Millaver et al.
Ishikawa et al., "Ultrasound-Promoted Direct Carboxylation of Perfluoralkyl Iodides," Journal Fluorine Chemistry, 22(1983; 585-587).
Tyssee et al., "Some Cathodic Organic Synthesis Involving Carbon Dioxide," Tetrahedron Letters No. 47, pp. 4809-4812, 1972.
Calas et al., "Change in the Mechanism of the Electroreduction of Perfluoro-n-Hexyl Iodide," J. Electroanal. Chem., 89(1978) 363-372.
Blancou et al., "Preparation of Perfluoroalkane Carboxylic and Sulphonic Acid Derivatives", J.C.S. Chem. Comm, 1976, 885-886.

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