Processes for preparing morphinan-6-one products with low levels of alpha beta-unsaturated compounds
US8748611B2 · kind B2 · utility
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18References
31Claims
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Key dates
| Filing date | Nov 11, 2011 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Jun 11, 2032 |
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.