Synthesis of 5H??pyrido [2, 3??a] phenoxazin??5??one and 5H??pyrido [3, 2??a] phenoxazin??5??one derivatives

S Nan'ya, E Maekawa, H Hayakawa…

Index: Nan'ya; Maekawa; Hayakawa; et al. Journal of Heterocyclic Chemistry, 1985 ,  vol. 22,  # 6  p. 1483 - 1485

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Citation Number: 7

Abstract

Abstract The 5H-pyrido [2, 3-a] phenoxazin-5-one derivatives and 5H-pyrido [3, 2-a] phenoxazin-5-one derivatives were prepared by the condensation of substituted 2- aminophenols with 6, 7-dibromo-5, 8-quinolinequinone followed by dehalogenation in the presence of sodium hydrosulfite dissolved in aqueous pyridine under a nitrogen atmosphere.