Pyridazino [3, 4??b] quinoxalines and their reduced derivatives. Preparation and structure

J Armand, Y Armand, L Boulares…

Index: Armand; Boulares; et al. Journal of Heterocyclic Chemistry, 1985 , vol. 22, # 6 p. 1519 - 1525

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Citation Number: 8

Abstract

Abstract The reaction of o-phenylenediamine with a β-ketoacid, leads in most cases to quinoxalinones. Their structure has been determined as well as that of their corresponding hydrazones. The reaction of hydrazine with these quinoxalinones gives dihydropyridazino [3, 4-b] quinoxalines, the structure of which has been ascertained. It has been shown that among the six possible formulas, the only 1, 2-dihydro structure fits with the spectroscopic ...