Synthesis and reactions of halo??, nitro??, and arylazo??substituted 3??aminotropolones. Formation of 8H??cyclohept [d] oxazol??8??one derivatives

…, BZ Yin, ZT Jin, K Imafuku

文献索引：Zhang, Luo-Cheng; Yin, Bing-Zhu; Jin, Zhong-Tian; Imafuku, Kimiaki Journal of Heterocyclic Chemistry, 1988 , vol. 25, p. 285 - 288

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被引用次数: 4

摘要

Abstract 3-Acetamidotropolone (1a) reacted with bromine and fuming nitric acid to afford respectively 3-acetamido-7-bromo-(1b) and-5, 7-dibromotropolone (1c) and 3-acetamido-5- nitrotropolone (1d). Azo-coupling reaction of 1a gave 3-acetamido-5-(4-methylphenylazo) tropolone (1f). Bromination of 1d and 1f gave 7-bromo-substituted compounds 1e and 1g, respectively. The compounds 1b-g were hydrolyzed to afford 3-aminotropolones 4b-g, ...