Process for producing 3-hydroxy-5-halopyridines
US4192946A · kind A · utility
8Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1978 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Jun 29, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/65
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of 3-hydroxy-5-chloropyridine and 3-hydroxy-5-bromopyridine is disclosed which process comprises reacting 2-furfurylamine in aqueous mineral-acid solution at -20.degree. to +5.degree. C. with chlorine or bromine, neutralizing the hydrohalic acid formed, heating the reaction mixture at reflux temperature, and isolating the formed 3-hydroxy-5-halopyridine. The 3-hydroxy-5-halopyridines obtained are intermediates for the production of insecticides.
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