Preparation of carboxylic acids using a BF.sub.3 catalyst comple

Details Preparation of carboxylic acids using a BF.sub.3 catalyst comple Preparation of carboxylic acids using a BF.sub.3 catalyst comple

1979-04-09

1981-03-17

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

203 66, 560214, 560233, 562599, 568697, C07C 5114, C07C 51377, C07C 53122, C07C 53124

Patent

active

042569133

ABSTRACT:
Propylene and ethylene may be carbonylated to form carboxylic acid esters or carboxylic acids in the presence of a catalyst complex containing 1 mole of BF.sub.3 and 1 mole of a second complexing component. The carboxylic acid product or acid portion of the ester product has one more carbon atom than the olefin reacted. High yields of these products are obtained. In the case of the formation of the ester, the second complexing component is an alcohol, while in the case of the preparation of carboxylic acid, the second complexing component is water. Methyl isobutyrate and methyl propionate formed by the carbonylation of propylene and ethylene, respectively, in the presence of a BF.sub.3.CH.sub.3 OH catalyst may be dehydrogenated to prepare methyl methacrylate and methyl acrylate, respectively. Similarly, the isobutyric acid and propionic acid formed from propylene and ethylene, respectively, in the presence of BF.sub.3.H.sub.2 O catalyst may be dehydrogenated to prepare methacrylic acid and acrylic acid, respectively.

REFERENCES:
patent: 2135459 (1938-11-01), Loder et al.
patent: 2378009 (1945-06-01), Hanford et al.
patent: 2967873 (1961-01-01), Koch et al.
patent: 3349107 (1967-10-01), Pawlenko
Pawlenko, Chemie. Ing. Techn., 40, 52 (1968).
Moller, Bernstoff-Chemie., 45, 129 (1964).

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