Preparation of adipic acid by hydrocarbonylation of pentenic aci

Details Preparation of adipic acid by hydrocarbonylation of pentenic aci Preparation of adipic acid by hydrocarbonylation of pentenic aci

1991-09-18

1993-03-30

Prescott, Arthur C.

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

Organic compounds

Carboxylic acids and salts thereof

C07C 5114

Patent

active

051985772

ABSTRACT:
Adipic acid is selectively prepared, in good yields, by reacting at least one pentenic acid with water and carbon monoxide, the partial pressure of which, measured at 25.degree. C., being less than or equal to 20 bar, in the presence of a catalytically effective amount of a rhodium-based catalyst and at least one iodine-containing promoter therefor, at a temperature ranging from 100.degree. to 240.degree. C. and at superatmospheric pressure, and in a liquid reaction medium which comprises a saturated aliphatic or aromatic carboxylic acid having up to 20 carbon atoms.

REFERENCES:
patent: 3579552 (1971-05-01), Craddock et al.
patent: 4788333 (1988-11-01), Burke
patent: 4788334 (1988-11-01), Burke

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