2,2,4,4-tetrasubstituted 4-formylbutyronitrile intermediates for the production of trisubstituted pyridines
US4665186A · kind A · utility
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4References
4Claims
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Inventors
Key dates
| Filing date | Mar 31, 1986 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Mar 31, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/61
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2,2,4,4-Tetrasubstituted-4-formylbutyronitriles are intermediates for the preparation of the known 2-chloro-3,5-dimethylpyridine and 2,5-dichloro-3-methylpyridine which in turn are suitable for the production of different compounds, in particular insecticides and herbicides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.