SNAR process for preparing benzimidazole compounds
US8183385B2 · kind B2 · utility
0Cited by
2References
39Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 21, 2006 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Nov 16, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D235/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided are methods for the synthesis of heterocyclic compounds such as benzimidazole carboxylic acid core structures having Formula Ia-2 and their synthetic intermediates: wherein X1, X2, X5, R1, R2 and R4 are as defined herein. Compounds of Formula Ia-2 and their synthetic intermediates can be used to prepare heterocyclic derivatives such as benzimidazole derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.