Preparation of carboxylic acids and esters

Details Preparation of carboxylic acids and esters Preparation of carboxylic acids and esters

1984-10-23

1985-12-10

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

2604109R, 260413, 560 1, 560105, 560174, 560177, 562400, 562496, 562577, 562606, C07C 6738, C07C 51347

Patent

active

045581533

ABSTRACT:
Carboxylic acids having two or more carbon atoms than formic acid, or esters of such carboxylic acids are prepared by reacting either formic acid or an ester of formic acid with an olefin at elevated temperature in the presence of a Group VIB metal catalyst. The Group VIB metal which is chromium, molybdenum or tungsten is suitably added as a carbonyl or carbonyl halide. In addition to the catalyst a halide promoter and a phosphorus containing copromoter may optionally be added. The process can be used, for example to prepare propionic acid or a propionic acid ester from ethylene and either formic acid of an ester of formic acid.

REFERENCES:
patent: 3644497 (1972-02-01), Mesich
patent: 3717670 (1973-02-01), Schultz
patent: 4354036 (1982-10-01), Rizakalla

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