Reactions of 3-acetyltropolone and its methyl ethers with hydrazine.
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概要
- 論文の詳細を見る
3-Acetyltropolone (<B>1</B>) was synthesized from 3-isopropenyltropolone by treatment with sodium azide in concentrated sulfuric acid. Methylation of <B>1</B> by diazomethane gave two isomers, 3-acetyl-2-methoxytropone (<B>2a</B>) and 2-acetyl-7-methoxytropone (<B>2b</B>). <B>1</B>, <B>2a</B>, and <B>2b</B> reacted with hydrazine to give some 1,8-dihydrocycloheptapyrazol-8-one derivatives.
- 公益社団法人 日本化学会の論文
著者
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IMAFUKU Kimiaki
Department of Chemistry, Faculty of Science, Kumamoto University
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Matsumura Hisashi
Department of Chemistry, Faculty of Science, Kumamoto University
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Yamane Akio
Department of Chemistry, Faculty of Science, Kumamoto University
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Nagayoshi Masatoshi
Department of Chemistry, Faculty of Science, Kumamoto University
関連論文
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- Reactions of 3-acetyltropolone and its methyl ethers with methylhydrazine.
- Substituent effect on the dissociation constants of 5-(substituted styryl)-2-aminotropones.
- Rearrangements in the Palladium-Catalyzed Dehydrogenation of Cyclohexylphenols to Phenylphenols
- Substituent effects on 6-substituted 3-hydroxy-1-methyl-4-pyridones.
- Reactions of 3-(2-methyl-1,3-dioxolan-2-yl)tropolone methyl ethers with hydrazines, thiourea, guanidine, and amidines.
- A convenient synthesis of 3-aminotropolone and its reactions with orthoesters. Formation of 8H-cyclohept(d)oxazol-8-ones.
- Reactions of 3-acetyltropolone and its methyl ethers with hydrazine.
- Synthesis and oxidative cyclization of 3-(1-cycloalkenyl)tropolones.
- Dehydrogenation of 2-(1-Cyclohexenyl)cyclohexanone with Palladium Catalyst
- Substituent effects on tautomerism of 4-pyridinethiones.
- Tautomerism of 4-pyridones.
- Reactions of 4H-pyran-4-thiones with ammonia, hydrazine, and guanidine.
- Structure of 5-hydroxy-2-hydroxymethyl-4-pyridones.
- Synthesis of 5-(substituted styryl)-2-aminotropones.
- Cyclodehydrogenation of 3-cinnamoyltropolones with 2,3-dichloro-5,6-dicyanobenzoquinone.
- Substituent effects on the dissociation constants of 1-aryl-5-hydroxy-2-hydroxymethyl-4-pyridones.
- Reactions of 3-acetyltropolone methyl ethers with 1,2-cyclohexanediamine.
- Oxidative cyclization of 3-(3-heterocycle-substituted 2-propenoyl)tropolones.
- Synthesis of 5-Styryltropolones
- Reactions of 3-acetyltropolone and its methyl ethers with o-aminophenol.
- Substituent effects on dissociation constants of trans-3-hydroxy-6-styryl-4-pyrones.