Catalytic oxidation of uronic acids to aldaric acids
US9079844B2 · kind B2 · utility
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Key dates
| Filing date | Mar 28, 2013 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Mar 28, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J21/063
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is the oxidation of uronic acids, such as galacturonic acid, to the corresponding aldaric acids (characterized by the formula HOOC—(CHOH)n-COOH, with n being an integer of from 1 to 5) such as galactaric acids. The starting material comprising the uronic acid is subjected to oxygen under the influence of a supported gold catalyst and in the presence of a base. The oxidation occurs in good selectivity and yield, under unexpectedly mild conditions. A source of galacturonic acids is pectin, such as that derived from sugar beet pulp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.