Heterocyclic Analogs of 5, 12-Naphthacenequinone. 1. Synthesis of Heterocyclic Analogs Starting from 2, 3-Diaminoquinizarine

AE Shchekotikhin, IG Makarov, VN Buyanov…

Index: Shchekotikhin; Makarov; Buyanov; Preobrazhenskaya Chemistry of Heterocyclic Compounds, 2005 , vol. 41, # 7 p. 914 - 920

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Citation Number: 3

Abstract

Abstract The amination of 2-nitroquinizarine using hydroxylamine gives 2-amino-3- nitroquinizarine, which, upon reduction, gives previously unreported 2, 3- diaminoquinizarine, a key intermediate in the synthesis of heterocyclic analogs of 5, 12- naphthacenequinone, namely, 4, 11-dihydroxyanthra [2, 3-d] imidazole-5, 10-dione (imidazoloquinizarine), 4, 11-dihydroxyanthra [2, 3-d][1, 2, 3] triazole-5, 10-dione ( ...