Production of carboxylic acids

Details Production of carboxylic acids Production of carboxylic acids

1984-07-13

1991-09-10

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

2604056, 560234, 562607, 562609, C07C 51353, C07C 53122, C07C 5308

Patent

active

050475835

ABSTRACT:
A carboxylic acid of formula RCO.sub.2 H, for example acetic acid, is prepared from a formate ester of formula HCO.sub.2 R, for example methyl formate, by heating the ester at elevated temperature with an iridium catalyst, a halide promoter and a strong acid. The strong acid is one having a pKa of not greater than 0 in aqueous media for example a sulphonic acid. Addition of the strong acid to the reaction mixture causes an increase in the rate of conversion of formate ester to carboxylic acid.

REFERENCES:
patent: 3772380 (1973-11-01), Paulik et al.
patent: 3839428 (1974-10-01), Isogai
patent: 4100359 (1978-07-01), Schmerling et al.
Mizorogi, Shokubai, 19, No. 2, pp. 90-95 (1977).

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