Method for producing furan-2,5-dicarboxylic acid
US7411078B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2007 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Mar 7, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for producing furan-2,5-dicarboxylic acid (FDCA) is provided which can efficiently and quantitatively producing FDCA under mild conditions, without employing an expensive catalyst and with a reduced energy consumption. A furan ring compound having two functional groups selected from a hydroxymethyl group, a formyl group and a carboxyl group in the 2- and 5-positions of the furan ring, is oxidized with a metal permanganate in an alkaline environment to produce furan-2,5-dicarboxylic acid. Advantageously, the alkaline environment contains at least one of alkali metal hydroxides and alkali earth metal hydroxides, and the oxidation is performed at a temperature of from 1 to 50° C. by adding the permanganate metal salt to the alkaline aqueous solution containing the furan ring compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.