Method of preparing N-halogenated organic heterocyclic compounds
US4745189A · kind A · utility
29Cited by
5References
19Claims
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Key dates
| Filing date | Jun 23, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Jun 23, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D251/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of preparing N-halogenated organic heterocyclic compounds by reacting in an aqueous mixture under alkaline conditions (e.g. NaOH) and in the presence of a halogenated organic compound (e.g. methylene chloride), a N-hydrogen organic heterocyclic compound containing at least one NH group (e.g. 5,5-dimethylhydantoin) and a halogen-producing chemical (e.g. Br.sub.2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.