My. Yakovlev et al., OMEGA-SUBSTITUTED-2-(POLYENAMINO)-NITROPYRIDINES OR ANNELATED NITROPYRIDINES FROM 1-(3-CYANO-5-NITROPYRIDYL-2)-PYRIDINIUM SALTS, Tetrahedron, 54(21), 1998, pp. 5775-5780
The interaction of 1-(3-cyano-5-nitropyridyl-2)pyridinium salts with d
ifferent nucleophilic reagents yields 2-substituted 3-cyano-5-nitropyr
idine including 2-polyenamino derivatives. 3-Nitro-5(H)-5-iminidipyrid
o[1.2-a:3.2-c] pyrimidine hydrochloride is synthesized by the reaction
of 2-chloro-3-cyano-5-nitropyridine with 2-aminopyridine. (C) 1998 El
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