Method for preparing chlorine-containing derivatives of pyridine compounds
US4804763A · kind A · utility
2Cited by
32References
11Claims
0Family size
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Key dates
| Filing date | Aug 19, 1985 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Aug 19, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/61
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The reactions of chlorination of the pyridine compounds are conducted by means of molecular chlorine, with the use, as free-radical forming initiator, of a decachlorobutane or an octachlorobutene such as octachlorobutene-1 or a crude mixture of these chlorine-containing products obtained by additive chlorination of hexachlorobutadiene-1,3. Good rates of conversion are obtained, and good yields at moderate temperatures. The method is applied, for example, to the chlorination of pyridine and beta-picoline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.