Process for preparing morphinan-6-one products with low levels of α,β-unsaturated ketone compounds
US8871779B2 · kind B2 · utility
1Cited by
23References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2007 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Nov 22, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D489/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention generally relates to processes for preparing highly pure morphinan-6-one products. The processes involve reducing the concentration of α,β-unsaturated ketone compounds present as impurities in morphinan 6 one products or reaction mixtures including morphinan 6 one compounds by treatment with a sulfur-containing compound. (A)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.