Process for the preparation of fluorinated acrylic acids and der

Details Process for the preparation of fluorinated acrylic acids and der Process for the preparation of fluorinated acrylic acids and der

1991-10-15

1992-05-19

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204 73R, 204 81, C25B 304

Patent

active

051145464

ABSTRACT:
In the preparation processes known hitherto for haloacrylic acids and deuterated derivatives thereof, it is necessary to use chemicals, some of which are very toxic or very expensive.
However, fluoroacrylic acids are successively prepared from halogenated fluoropropionic acids and derivatives thereof by electrochemical elimination of halogen atoms.
For this purpose, the acids or derivatives thereof are electrolyzed in a water-containing solution at a temperature from -10.degree. C. to the boiling point of the electrolysis liquid.

REFERENCES:
patent: 4098657 (1978-07-01), Kay et al.
patent: 4162948 (1979-07-01), Yagii et al.
patent: 4707226 (1987-11-01), Dapperheld
C. Giomini et al., J. Chem. Research (M) pp. 2401-2416 (1983).
W. H. Jura et al., J. Amer. Chem. Soc. 80 pp. 5402-5409 (1958).
Elektroorganische Chemie, Fritz Beck, Verlag Chemie, 1974, pp. 210-214 and English Translation.

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