Process for the reduction of unsaturated carboxylic acids

Details Process for the reduction of unsaturated carboxylic acids Process for the reduction of unsaturated carboxylic acids

1981-12-09

1983-10-11

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260410, 2604109R, 2604109N, 560205, 560225, 568885, C11C 312

Patent

active

044091486

ABSTRACT:
Unsaturated carboxylic acids may be reduced to the corresponding alcohols and esters while maintaining some degree of unsaturation in the carbon atom chain of the molecule by treating said acids with hydrogen in the presence of a catalyst system comprising rhenium composited on a solid support such as alumina and a phosphorous-containing compound as a modifier. The catalyst which is employed at reaction condition, including a temperature in the range of from about 100.degree. to about 500.degree. C. and a pressure in the range of from about 100 to about 5000 psi, may be exemplified by rhenium composited on gamma-alumina and hypophosphorous acid.

REFERENCES:
patent: 1796231 (1931-03-01), Bannister
patent: 2729660 (1956-01-01), Harrison
patent: 3071604 (1963-01-01), Mohan et al.
patent: 3836553 (1974-09-01), Fenton
patent: 4340546 (1982-07-01), Qualeatti et al.

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