Preparation of substituted 2-phenylpyridines by heterocyclization of acetylene with benzonitriles

Autor:	Kayushina, E. N., Levin, D. Z., Mortikov, E. S., Promonenkov, V. K.
Zdroj:	Russian Chemical Bulletin; July 1986, Vol. 35 Issue: 7 p1474-1477, 4p
Abstrakt:	1.Heterocyclizations of acetylene with benzonitriles containing a CH3, Cl, CH3O, C2H5O, or (CH3)2N group in the presence of n5-dicyclopentadienylcobalt yield the corresponding 2-substituted pyridines in yields of about 90%.2.Nitriles containing OH, NO2, or halogen at the ortho position of the nitrile group do not react with acetylene.3.For benzonitriles containing a CH3, Cl, or CH3O group in the ortho or para position, a relation between the activity of the nitrile and the value of the Hammett constant of the substituent was found for the investigated reaction.
Databáze:	Supplemental Index
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