| Autor: |
Abele, é. M., Gol'dberg, Yu. Sh., Gavars, M. P., Gaukhman, A. P., Shimanskaya, M. V. |
| Zdroj: |
Chemistry of Heterocyclic Compounds; March 1988, Vol. 24 Issue: 3 p290-294, 5p |
| Abstrakt: |
Reactions of halopyridines with alkali metal phenoxides in a two phase liquid-solid catalytic system, rather than in a liquid-liquid phase transfer catalytic system, make it possible to prepare 2-, 3-, and 4-phenoxypyridines from unactivated bromo- or chloropyridines and 2-chloropicolines. In polyhalogenated pyridines only a- and ?-halogen atoms undergo substitution. 7, 8-Dibromo-6-azaphenoxane has been prepared by the reaction of 2,3,5,6-tetrabromopyridine with the dipotassium salt of pyrocatechol. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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