Method for the synthesis of a benzimidazole compound
US5958955A · kind A · utility
12Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jan 23, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P1/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for the manufacture of omeprazole from pyrmethyl alcohol via pyrmethyl chloride and pyrmetazole characterized in that the whole reaction sequence is carried out without any isolation or purification of intermediates. Further that the reaction is carried out in a main solvent system common for the whole reaction sequence and inert to the reactants formed during the process and used in the process. The process according to the present invention may also include an additional purification step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.