Process for producing 2,3,5,6-tetrachloropyridine and 3,5,6-trichloropyridin-2-ol
US4327216A · kind A · utility
4Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Nov 24, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/61
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2,3,5,6-Tetrachloropyridine and/or 3,5,6-trichloropyridin-2-ol can be obtained, using a simple novel process, by reacting trichloroacetyl chloride, in the presence of a catalyst, for example copper (I) chloride or -bromide, with acrylonitrile. 2,3,5,6-Tetrachloropyridine and 3,5,6-trichloropyridin-2-ol are suitable for producing various active substances, particularly for producing insecticides, herbicides and fungicides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.