Process for preparing a carboxylic acid

Details Process for preparing a carboxylic acid Process for preparing a carboxylic acid

1995-04-28

1999-11-23

Barts, Samuel

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

Organic compounds

Carboxylic acids and salts thereof

562519, 562520, C07C 5110, C07C 5114, C07C 5112

Patent

active

059903473

ABSTRACT:
A process for preparing a carboxylic acid having n+1 carbon atoms by contacting carbon monoxide with a liquid reaction composition comprising an alcohol of n carbon atoms or an ester derivative thereof; an iridium carbonylation catalyst and a hydrocarbyl halide promoter wherein in the liquid reaction composition the concentration of water is about 2 to 8% by weight, the concentration of ester derivative of said alcohol and product acid is from 1 to 60% by weight (preferably 3-35% by weight), and the concentration of hydrocarbyl halide is from 2 to 10% weight.

REFERENCES:
patent: 3772380 (1973-11-01), Paulik et al.
patent: 4007130 (1977-02-01), Leach et al.
patent: 5344972 (1994-09-01), Isshiki et al.
Forster, "Kinetic and Spectroscopic Studies of the Carbonylation of Methanol with an Iodide-promoted Iridium Catalyst", J.C.S. Dalton, 1979, pp. 1639-1645.

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