Process for preparing carboxylic acids and derivatives thereof
US7642372B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2005 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Aug 18, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/37
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Preparation of an aliphatic carboxylic acid having (n+1) carbon atoms, where n is an integer up to 6, and/or an ester or anhydride thereof may be achieved by contacting an aliphatic alcohol having n carbon atoms and/or a reactive derivative thereof with carbon monoxide substantially in the absence of the halogens or derivatives thereof at a temperature in the range 250-600° C. and at a pressure in the range 10 to 200 bars, in the presence of a catalyst consisting essentially of a mordenite which has, as framework elements, silicon, aluminum and one or more of gallium, boron and iron, and which has been ion-exchanged or otherwise loaded with copper, nickel, iridium, rhodium or cobalt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.