Preparation of isopropenyl esters of dicarboxylic acids

Details Preparation of isopropenyl esters of dicarboxylic acids Preparation of isopropenyl esters of dicarboxylic acids

1977-09-21

1981-04-14

Mars, Howard T.

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

Organic compounds

Carboxylic acid esters

560201, C07C 69767, C07C 6982, C07C 6948, C07C 6950

Patent

active

042621372

ABSTRACT:
Isopropenyl esters and half isopropenyl ester-half carboxylic acid products are prepared by reacting at a temperature of about 150.degree.-160.degree. C. at maximum pressures of from about 400 to 1000 psi for about 10 to 20 hours in the presence of a suitable catalyst and in N-methyl-2-pyrrolidone, a saturated or unsaturated aliphatic or aromatic dicarboxylic acid with methylacetylene or with a gas containing a mixture of methylacetylene, allene and some inert short chain hydrocarbons.

REFERENCES:
patent: 2411962 (1946-12-01), Freed
patent: 2466738 (1949-04-01), Phillips
patent: 3574717 (1971-04-01), Lloyd
patent: 3941741 (1976-03-01), De Zuba et al.
patent: 4020123 (1977-04-01), Trapasso
Rothman et al, J. Org. Chem., 31, 629-630 (1966).

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