Method of producing benzamide derivatives
US6320078A · kind A · utility
15Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Jul 23, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D249/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In the case that a selectively monoacylated phenylenediamine derivative which is useful as any of medicines, agricultural chemicals, animal drugs and the intermediates of chemicals is prepared by reacting a benzoic acid derivative with a phenylenediamine derivative, the benzoic acid derivative is converted into a benzoyl imidazole derivative and this benzoyl imidazole derivative is then reaction with the phenylenediamine derivative, whereby the improvement of a preparation efficiency and the high selectivity of the monoacylation can be achieved, the steps of protection and deprotection being omitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.