Method for preparing dicarboxylic acids

Details Method for preparing dicarboxylic acids Method for preparing dicarboxylic acids

1973-02-08

1976-09-07

Garner, Vivian

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260488F, 260491, 260497R, C07C 5126

Patent

active

039794504

ABSTRACT:
A method for preparing dicarboxylic acids by subjecting cycloolefins to ozonolysis in a medium of lower monocarboxylic acids so as to form an ozonalyzate; treating the ozonalyzate with a solution of hydrogen peroxide; passing the thus obtained mixture through a solid acid catalyst, such as an Amberlite IR-120 cation-exchange resin; and subjecting the thus obtained catalyzed product first to thermal treatment at a temperature of from 50.degree. to 80.degree.C and then to thermal decomposition at a temperature of from 90.degree. to 110.degree.C to form desired dicarboxylic acids such as succinic, suberic or 1,10-decanedicarboxy acids, depending on the starting cycloolefin, in a yield 98 per cent of the theoretical value and of 99.5 per cent purity.

REFERENCES:
patent: 3014070 (1961-12-01), Chafetz
patent: 3441604 (1969-04-01), Baylis et al.
patent: 3856833 (1974-12-01), Siclari et al.
Barley, Chem. Revs. vol. 58 No. 5 (1958).
Kressman, Manufacturing Chemist, Nov. 1956.

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