YAKUGAKU ZASSHI
Online ISSN : 1347-5231
Print ISSN : 0031-6903
ISSN-L : 0031-6903
転位反応の研究 (第6報)
ピリダゾン誘導体よりピラゾロン誘導体への縮環反応
牧 敬文木津 弘子小畑 和永
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1963 年 83 巻 7 号 p. 725-728

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1-Phenyl-3, 5-dichloro-6(1H)-pyridazinone (IV) was converted into 1-phenyl-3-hydroxy-pyrazolecarboxylic acid (VI) by treatment with alkali hydroxide solution. The structure of VI was established mainly from infrared spectra of VI and its derivatives. The mechanism of this ring-contraction reaction was assumed.

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© by the PHARMACEUTICAL SOCIETY OF JAPAN
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