Journal of Heterocyclic Chemistry

Synthesis and spectral data of pyrido [2, 3??e]??as??triazines

N Pie, G Queguiner

Index: Ple, N.; Queguiner, G. Journal of Heterocyclic Chemistry, 1989 , vol. 26, p. 475 - 476

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Citation Number: 5

Abstract

Abstract The pyrido [2, 3-e]-as-triazine and its 3-phenyl derivatives were prepared via cyclisation with polyphosphoric acid of suitable 3-substituted 2-aminopyridines obtained by reduction of the corresponding 2-nitropyridines. The 3-substituted 2-nitropyridines were obtained by action of hydrazine or benzoylhydrazide with the appropriate 3-halo-2- nitropyridines; only 3-fluoro-2-nitropyridine leads to the 3-substituted 2-nitropyridines. This ...