Solid catalysts for epimerization of aldoses; continuous interconversion of epimeric sugars
US4815445A · kind A · utility
8Cited by
2References
16Claims
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Key dates
| Filing date | Feb 9, 1988 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Feb 9, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H15/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Anion exchange resins which have been exchanged with molybdate at acid pH are effective catalysts for epimerizing compounds with the structural unit: ##STR1## Cheif among these are aldoses, especially aldopentoses and aldohexoses, as well as some deoxy-sugars. A method for the continuous epimerization of aldoses and other compounds having the necessary structural feature shown using a fixed bed of molybdate-exchanged resin is quite efficient, and can be employed in enhancing the yield of the thermodynamically formed epimer which is produced as the minor epimer in a mixture under kinetic control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.