Method for making unsaturated aliphatic carboxylic acid anhydrid

Details Method for making unsaturated aliphatic carboxylic acid anhydrid Method for making unsaturated aliphatic carboxylic acid anhydrid

1986-12-02

1988-11-01

Garner, Vivian

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

560204, 260413, 260546, C07C 5112, C07C 5704

Patent

active

047818689

ABSTRACT:
Method for making alpha, beta-unsaturated carboxylic acid anhydrides by carbonylation of esters of acrylic acid or methacrylic acid in the presence of a catalyst system containing at least one noble metal from group VIII of the periodic table, for example rhodium, the reaction being carried out at 70.degree. C. to 350.degree. C. and at pressures from 1 to 500 bar in the presence of a halogen or of a halogen compound, and in particular of iodine or an iodine compound, as a promoter.

REFERENCES:
patent: 2729651 (1956-01-01), Reppe et al.
Chem. Abstr. 103, 54563z (1985).
Chem. Abstr., 103, 177968t (1985).

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