Process for producing 2-methyl-2-butenoic acid

Details Process for producing 2-methyl-2-butenoic acid Process for producing 2-methyl-2-butenoic acid

1986-08-22

1991-08-20

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

203 69, 562600, C07C 5108, C07C 5703

Patent

active

050416464

ABSTRACT:
A process for producing cis-2-methyl-2-butenoic acid, which process is preferably based on technical 2-methyl-2-butene nitrile and leads to pure products preferably without costly rectification. The technical nitrile is hydrolyzed by concentrated sulfuric acid at temperatures of up to 130.degree. C. and, following dilution of the sulfuric acid to about 50%, at temperatures of up to 130.degree. C. It is treated by distilling and fractional crystallization.

REFERENCES:
patent: 3320305 (1967-05-01), Wiese
patent: 3381034 (1968-04-01), Greene et al.
patent: 3515750 (1970-06-01), Schroder et al.
patent: 3876691 (1975-04-01), Lincoln
patent: 4613680 (1986-09-01), Naruto et al.
Buckles et al., Chem. Reviews, 55, 659-677 (1955).
Demarcay, Chem. Ber., 9, 1933 (1876).

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