Method to prepare .alpha.-.beta. unsaturated carboxylic acids fr

Details Method to prepare .alpha.-.beta. unsaturated carboxylic acids fr Method to prepare .alpha.-.beta. unsaturated carboxylic acids fr

1999-02-04

2000-07-04

Geist, Gary

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

Organic compounds

Carboxylic acids and salts thereof

562518, 562519, 562523, 562531, 562532, 562533, 562534, 562537, 562544, 562545, 562546, C07C 5110, C07C 51145, C07C 5112

Patent

active

060841249

ABSTRACT:
The present invention is a method to produce an unsaturated carboxylic acid which includes the steps of: providing an epoxy compound; contacting the epoxy compound with carbon monoxide in the presence of a catalytically effective amount of a catalyst system comprising tin and cobalt under conditions effective for carbonylation of the epoxy; and recovering a .alpha.-.beta. unsaturated carboxylic acid product. The preferred epoxy is ethylene oxide which is reacted to acrylic acid by the method of the present invention.

REFERENCES:
patent: 3892794 (1975-07-01), Grasselli et al.
patent: 4209467 (1980-06-01), Kojima et al.
patent: 5310948 (1994-05-01), Drent et al.

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