Preparation of 4-methylimidazoles
US4377696A · kind A · utility
4Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1981 |
| Grant date | Mar 22, 1983 |
| Priority date | — |
| Expiry date | Apr 13, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of 4-methylimidazoles by reacting methylglyoxal with ammonia and an aldehyde in aqueous solution, wherein the reaction is carried out at a pH of above 7 and either the reactants are all brought into contact simultaneously or the aldehyde and the methylglyoxal are added simultaneously to the aqueous ammonia solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.