Homogeneous carbonylation catalyst and process using the catalyst
US7449597B1 · kind B1 · utility
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Key dates
| Filing date | Oct 19, 2004 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Sep 11, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A catalyst useful for carbonylation of olefins has been developed. The catalyst comprises a palladium compound, e.g. PdIm4Cl2, where Im is imidazole and HCl dissolved in water or an alcohol. Carbonylation using this catalyst involves contacting an olefin stream preferably in a solvent such as o-xylene with the catalyst and carbon monoxide at carbonylation conditions to provide a carboxylic acid or an ester. When the catalyst solvent is water one can obtain an acid as the product, but when the catalyst solvent is an alcohol one obtains an ester as the product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.