Process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives
US8101756B2 · kind B2 · utility
4Cited by
1References
27Claims
0Family size
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Key dates
| Filing date | Jul 18, 2008 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Nov 6, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D489/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives. This is achieved by using a nucleophilic nitrogen, phosphor or sulfur containing base in the reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.