Carbonylation process

Details Carbonylation process Carbonylation process

1995-12-19

1997-05-20

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

562522, C07C 6952

Patent

active

056314000

ABSTRACT:
A process is provided for carbonylation of ethylenic unsaturation comprising the steps of: providing a catalyst system comprising a) a Group VIII metal compound, b) an organic phosphine, and c) and acid; and contacting acetylene, the catalyst system, carbon monoxide, hydrogen, and a nucleophilic compound under conditions effective to carbonylate the acetylene. The presents of hydrogen unexpectedly improves the yield of the desired product (i.e., acrylic acid or the ester thereof).

REFERENCES:
patent: 4940787 (1990-07-01), Drent
patent: 5099062 (1992-03-01), Drent et al.
S. A. Miller, "Acetylene: Properties Manufacture and Uses", vol. 1, Ernest Benn Ltd., London (1965).

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