Process for producing cinnamic acid from 1,1,1,3-tetrachloro-3-p

Details Process for producing cinnamic acid from 1,1,1,3-tetrachloro-3-p Process for producing cinnamic acid from 1,1,1,3-tetrachloro-3-p

1987-06-04

1989-02-21

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C07C 51093

Patent

active

048066818

ABSTRACT:
This invention relates to a process for preparing cinnamic acid by hydrolysis of 1,1,1,3-tetrachloro-3-phenylpropane with acetic acid, trifluoroacetic acid or formic acid, optionally in the presence sulphuric acid, phosphoric acid, para-toluenesulphonic acid, or a cation exchange resin containing sulphonic acid groups. The mixture is heated at a temperature from about 80.degree. to about 150.degree. C. until hydrogen chloride evolution ceases, after which time the cinnamic acid is separated.

REFERENCES:
Asscher et al., J. Chem. Soc., pp. 1887-1896 (1963).
Goldwhite et al., Tetrahedron, vol. 20, pp. 1649-1656 (1964).

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