Process for producing .alpha., .alpha., .alpha.-trifluoro-o-tolu

Details Process for producing .alpha., .alpha., .alpha.-trifluoro-o-tolu Process for producing .alpha., .alpha., .alpha.-trifluoro-o-tolu

1980-03-07

1981-12-15

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

204158HA, 26034622, C07C 5158

Patent

active

043058892

ABSTRACT:
.alpha.,.alpha.,.alpha.-trifluoro-o-toluic fluoride is produced in good yield and high purity by reacting anhydrous hydrogen fluoride with 1,1,3,3-tetrachloro-1,3-dihydroisobenzofuran or a mixture of .alpha.,.alpha.,.alpha.-trichloro-o-toluic chloride therewith, the mixture being preferably produced by sufficiently photochlorinating o-toluic chloride in mild conditions.

REFERENCES:
patent: 2181554 (1939-11-01), Kracker et al.
patent: 2289886 (1942-07-01), Schmerling
Yagupol'skii, L. M. et al. Chemical Abstracts, vol. 55 (1961) #19888h.
Ott, Erwin Berichte, vol. 55B (1922) pp. 2108-2125.
Davies, William et al., J. Chem. Society vol. 121 (1922) pp. 2202-2214.
Lovelace, A. M. et al., "Aliphatic Fluorine Compounds" (1958) Reinhold, Publ., p. 143.
J. Chem. Soc., vol. 221, pp. 2204-2215, (1922), "Davies and Perkin: The Chlorination and Bromination of the Toluic Acids, etc.".

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