Process to prepare a pentenoic acid anhydride

Details Process to prepare a pentenoic acid anhydride Process to prepare a pentenoic acid anhydride

1997-10-07

2000-04-11

Richter, Johann

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

Organic compounds

Carboxylic acid anhydrides

562890, C07C 5156

Patent

active

060490055

ABSTRACT:
Process to prepare a pentenoic acid anhydride in the pressence of a catalyst comprising palladium and an organic phosphine ligand, wherein the corresponding alkoxycarbonyl butene is reacted with carbon monoxide at a temperature between 50 and 130.degree. C. and that the phosphine is a monodentate phosphine or a bidentate phosphine.

REFERENCES:
patent: 3641137 (1972-02-01), Fenton
patent: 4325834 (1982-04-01), Bartish et al.
patent: 4781868 (1988-11-01), Langerbeins
patent: 4824817 (1989-04-01), Drent
patent: 5756828 (1998-05-01), Arnoldy et al.
*Derwent Abstract, DE 3544764.
**Derwent Abstract, JP 47-47005.

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