Preparation of adipic acid by hydrocarboxylation of pentenic acids
US5268505A · kind A · utility
3Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1991 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Dec 20, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Adipic acid is prepared by hydrocarboxylating at least one pentenic acid in the presence of a catalytically effective amount of rhodium values, whether metallic rhodium or a compound thereof, and an iodine-containing promoter therefor, as well as in the presence of a cocatalytically effective amount of at least one of iridium, ruthenium, osmium or compound thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.