Carbonylation of conjugated dienes

Details Carbonylation of conjugated dienes Carbonylation of conjugated dienes

1993-06-24

1994-09-27

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6736

Patent

active

053508769

ABSTRACT:
The invention relates to a process for the preparation of alkenoic acid derivatives by reaction of an aliphatic conjugated diene with carbon monoxide and a hydroxyl group-containing compound. The reaction is carried out in a liquid reaction medium of controlled polarity in the presence of a catalyst system containing a palladium compound, a multidentate phosphine ligand, and optionally a protonic acid. By controlling the polarity of the reaction medium to a calculated dielectric constant .epsilon..sub.calc of below a value of 8, higher reaction rates are achieved.

REFERENCES:
patent: 4172087 (1979-10-01), Knifton
patent: 4739110 (1988-04-01), Drent
patent: 4824817 (1989-04-01), Drent
patent: 4894474 (1990-01-01), Maerial et al.
patent: 4925973 (1990-05-01), Deweerdt et al.
patent: 5026901 (1991-06-01), D'Amore
patent: 5028734 (1991-07-01), Drent

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