Substituted pyridines and their preparation
US4405792A · kind A · utility
3Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1981 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Sep 8, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
4-(Chlorophenyl)pyridines in which the chlorine atom is in the 3- or 4-position of the phenyl group are prepared by reacting a 4-vinyl pyridine with chloroprene to form a 4-(3- or 4-chlorocyclohex-3-enyl)pyridine and then catalytically dehydrogenating the 4-(3- or 4-chlorocyclohex-3-enyl)pyridine to form a 4-(3- or 4-chlorophenyl)pyridine. The 4-(3- and 4-monochlorocyclohex-3-enyl)pyridines are novel compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.