Method for synthesising 2,5-di(hydroxymethyl)furan and 2,5-di(hydroxymethyl)tetrahydrofuran by selective hydrogenation of furan-2,5-dialdehyde
US9475786B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2013 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Sep 26, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for selective hydrogenation of furan-2,5-dialdehyde (DFF) into 2,5-di(hydroxymethyl)furan (DHMF) and into 2,5-di(hydroxymethyl)tetrahydrofuran (DHMTHF). In relation to the prior art, which uses C6 sugars or 5-hydroxymethyl furaldehyde (5-HMF) as raw materials, the method can be performed at low temperatures (lower than 120° C., preferably 80° C.), while consuming low amounts of catalyst relative to the initial reagent (in particular less than 5%, preferably less than 2% relative to the weight of the reagent). The heterogeneous catalyst used can also be recycled from one reaction to another. Finally, the choice of experimental conditions enables the selective formation of DHMF or DHMTHF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.