Journal of heterocyclic chemistry

Synthesis and reactions of 3??carboxytropolone. Conversion to heterocycle??fused troponoid compounds

LC Zhang, K Imafuku

Index: Zhang, Luo-Cheng; Imafuku, Kimiaki Journal of Heterocyclic Chemistry, 1991 , vol. 28, # 3 p. 717 - 720

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Citation Number: 2

Abstract

Abstract The haloform reaction of 3-acetyltropolone (1) afforded 3-carboxytropolone (2) which was treated with diazomethane to give 2-methoxy-3-methoxycarbonyltropone (3a) and 2-methoxy-7-methoxycarbonyltropone (3b). The tropolone 2 reacted with hydrazine to afford 2-hydrazino-3-hydrazinocarbonyltropone (10) or 2-hydrazinotropone (11), depending on the reaction time. The reaction of 2 with phenylhydrazine produced 3-hydroxy-1-phenyl ...