Structure of 5-hydroxy-2-hydroxymethyl-4-pyridones.
スポンサーリンク
概要
- 論文の詳細を見る
5-Hydroxy-2-hydroxymethyl-4-pyridone and its <I>N</I>-methyl, <I>N</I>-ethyl, and <I>N</I>-phenyl derivatives were prepared from kojic acid. The UV spectra in neutral, acid, and alkaline solutions showed that the neutral species and the conjugate acids existed in the pyridone and the pyridine form, respectively. The conjugate bases may exist in both forms. The acid dissociation constants and the halochromism have been measured and discussed.
- 公益社団法人 日本化学会の論文
著者
-
IMAFUKU Kimiaki
Department of Chemistry, Faculty of Science, Kumamoto University
-
Matsumura Hisashi
Department of Chemistry, Faculty of Science, Kumamoto University
-
Ishizaka Makoto
Department of Chemistry, Faculty of Science, Kumamoto University
関連論文
- Synthesis of Tropolone Glucopyranosides
- Synthesis and reactions of 2-arylhydrazinotropones. I. Preparation of 2-(2-arylhydrazino)tropones and the 4-substituted derivatives.
- Synthesis and reactions of 2-arylhydrazinotropones. II. Synthesis of 5-aryltropolones and B-ring-open colchicine analogues via benzidine type rearrangement of 2-(2-arylhydrazino)tropones.
- 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.