Process for the production of carboxylic acid anhydrides

Details Process for the production of carboxylic acid anhydrides Process for the production of carboxylic acid anhydrides

1992-10-22

1994-03-29

Dees, Jose G.

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

Organic compounds

Carboxylic acid anhydrides

562607, 562893, C07C 5312, C07C 5308

Patent

active

052985865

ABSTRACT:
The solubility and stability of rhodium catalysts in rhodium-catalysed carbonylation of alkyl esters or alkyl ethers under substantially anhydrous conditions to produce carboxylic acid anhydrides is improved by the use of co-promoters selected from the group:

REFERENCES:
patent: 4430273 (1984-02-01), Erpenbach et al.
J. Chem. Soc. (1972) pp. 2616-2627.
Heterocyclic Chem., vol. 5, Potts Ed., pp. 352-353 (1985).
Organic & Biological Chem., Haake et al., 91:5, Feb. 26, 1969, pp. 1113-1119.
J. Chem. Soc. (1910), pp. 1814-1833.

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