Process for the preparation of carboxylic acids from organic hal

Details Process for the preparation of carboxylic acids from organic hal Process for the preparation of carboxylic acids from organic hal

1975-06-10

1977-07-05

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260413, 260515A, 260540, C07C 6300

Patent

active

040340040

ABSTRACT:
A process for preparing carboxylic acids by reaction of carbon monoxide with aromatic and aliphatic organic halides, optionally further substituted by groups inert under the reaction conditions, and catalyzed by phosphinic palladium complexes and in the presence of quaternary alkyl-ammonium salts, characterized in that said process is conducted in a double liquid phase consisting essentially of (a) the organic halide and the catalytic palladium complex or their solutions in at least one hydrocarbon solvent immiscible with H.sub.2 O, and (b) an aqueous inorganic alkaline solution containing the quaternary alkyl-ammonium salt, at a temperature between about 50.degree. and 150.degree. C. More particularly, the reaction is conducted in the presence of at least one catalyst selected from among:

REFERENCES:
patent: 2565464 (1951-08-01), Tabet
patent: 3437676 (1969-04-01), Kutepow et al.
patent: 3655745 (1972-04-01), Fenton
patent: 3700729 (1972-10-01), Fenton
patent: 3708529 (1973-01-01), Cassar et al.
patent: 3769326 (1973-10-01), Paulik et al.
patent: 3769329 (1973-10-01), Paulik et al.
patent: 3919272 (1975-11-01), Knifton
patent: 3968133 (1976-07-01), Knifton
Cassar et al., Chem. Abstracts, vol. 79, 125323(v) (1973).
Thompson et al., Chem Abstracts, vol. 77, 100238(s) (1972).

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