Preparation of adipic acid by hydrocarbonylation of pentenic acids
US5198577A · kind A · utility
4Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | Sep 18, 1991 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Sep 18, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.