Ma. Barsy et al., Sucesseful approache for the synthesis of newly fused heterocyclic compounds incorporating phenylperinaphthenone and naphrydine derivatives., HETEROCYC C, 6(4), 2000, pp. 339-344
The reacion of 3- cyano-4-methyl-6-oxo-5-phenylhydrazono-2-pyridinylmalono-
nitrile 1 with a different substituted of alpha, beta -unsaturated nitriles
: hydrazines: hydroxylaminehydrochloride; phenylisocyanate: a mixture of hy
drochloric / acetic acid and with sulfur afforded the corresponding newly f
used heterocyclic azines. The structures of these compounds were establishe
d by analytical and spectral data.