Hydrocarboxylation of unsaturated carboxylic acids to linear dicarboxylic acids
US4788333A · kind A · utility
10Cited by
5References
8Claims
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Key dates
| Filing date | Jan 7, 1985 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jan 7, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The preparation of linear dicarboxylic acids, e.g., adipic acid, by hydrocarboxylating unsaturated monocarboxylic acids, e.g., 3-pentenoic acid, with carbon monoxide and water in the presence of a rhodium-containing catalyst, an iodide promoter and certain inert halocarbon solvents, e.g., methylene chloride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.