Process for preparing hydromorphone and derivatives thereof
US10370382B2 · kind B2 · utility
0Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2016 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Jul 26, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D489/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is provided a novel process for the preparation of a compound of formula (I), wherein R1 is as described in the description, by demethylation of a corresponding O-methyl derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.