Process for the preparation of 2-halogenated ergoline derivatives
US4816587A · kind A · utility
9Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jun 5, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D519/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a novel process for the halogenation in 2-position of ergot alkaloids. The process is characterized by that as a halogenating agent a system consisting of dimethylsulfoxide, a trialkylhalosilane or triarylhalosilane and optionally a hydrogen halide is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.