Practical syntheses of chiral trans-3, 4-disubstituted piperidines and the intermediates
US6833458B2 · kind B2 · utility
11Cited by
5References
21Claims
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Key dates
| Filing date | May 28, 2002 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | May 28, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D211/76
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A new method for the preparation of chiral 4-substituted 2-piperidinones, trans-3,4-disubstituted 2-piperidinones, and trans-3,4-disubstituted piperidines is invented. Chiral paroxetine can be obtained from a chiral trans-3,4-disubstituted piperidine intermediate in high purity and good selectivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.