Preparation of carboxylic acids using a BF.sub.3 catalyst complex
US4256913A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1979 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Apr 9, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Propylene and ethylene may be carbonylated to form carboxylic acid esters or carboxylic acids in the presence of a catalyst complex containing 1 mole of BF.sub.3 and 1 mole of a second complexing component. The carboxylic acid product or acid portion of the ester product has one more carbon atom than the olefin reacted. High yields of these products are obtained. In the case of the formation of the ester, the second complexing component is an alcohol, while in the case of the preparation of carboxylic acid, the second complexing component is water. Methyl isobutyrate and methyl propionate formed by the carbonylation of propylene and ethylene, respectively, in the presence of a BF.sub.3.CH.sub.3 OH catalyst may be dehydrogenated to prepare methyl methacrylate and methyl acrylate, respectively. Similarly, the isobutyric acid and propionic acid formed from propylene and ethylene, respectively, in the presence of BF.sub.3.H.sub.2 O catalyst may be dehydrogenated to prepare methacrylic acid and acrylic acid, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.