Process to prepare .alpha.-chloroalprazolam
US4663454A · kind A · utility
3Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Apr 17, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
.alpha.-Halomethylbenzodiazepines (II) are produced by direct halogenation of methylbenzodiazepines (I) using sulfuryl halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.