Method of selectively chlorinating 2-chloro-5-(trichloromethyl) pyridine in the 3-position
US4701532A · kind A · utility
3Cited by
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11Claims
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Key dates
| Filing date | Mar 27, 1986 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Mar 27, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/61
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The selective chlorination of 2-chloro-5-(trichloromethyl)pyridine in the 3-position is achieved by reacting 2-chloro-5-(trichloromethyl)pyridine in the liquid phase with an effective amount of Cl.sub.2 at an elevated pressure and elevated temperature in the absence of an added catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.