Process for preparing imidacloprid
US6307053A · kind A · utility
4Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Dec 29, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D401/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing imidacloprid involves reacting 2-nitroiminoimidazolidine with 2-chloro-5-chloromethyl pyridine in the presence of an alkali carbonate in an organic solvent. A stoichiometric amount of the 2-chloro-5-chloromethyl pyridine is gradually added into mixture of a corresponding stoichiometric amount of the 2-nitroiminoimidazolidine and the organic solvent under reflux condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.