Process for resolving mixtures of carbocyclic stereoisomers
US6147254A · kind A · utility
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5Claims
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Key dates
| Filing date | Aug 6, 1999 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Aug 6, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of carbocyclic stereoisomers of formulae (I), (I'), (IIA'), (IIB'), (VA') and (VB'), including enantiomerically pure (IIA'), (I) and (I') utilizing fractional crystallization of salts formed with a chiral base; a reducing agent; a protecting group removing agent or a protecting group providing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.