Process for the resolution of a racemate
US4687871A · kind A · utility
1Cited by
10References
21Claims
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Key dates
| Filing date | Nov 7, 1985 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Nov 7, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A racemate may be resolved into its enantiomers by stereoselective adsorption on a crystalline molecular sieve having an assymetric crystal structure for example zeolite ZSM11. The resolution may be assisted by the presence of an enantiomer of a compound separable from that of the racemate either preadsorbed on the molecular sieve or included in a polar solvent solution of the racemate to be treated. Resolution of an alkyl aryl sulphoxide racemate is exemplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.