Studies on Pyrimidinylpyrazoles. III. Tautomerism of 1-and 2-Pyrimidinylpyrazolines
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概要
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The tautomerism of 1-and 2-pyrimidinylpyrazolin-5-ones was investigated by using the combination of spectral methods, IR, NMR, and UV. 1-Pyrimidinylpyrazolin-5-ones exist in NH and OH forms in nonpolar media such as chloroform and carbon tetrachloride, while NH form increases in aqueous solution. In nonpolar media 2-pyrimidinylpyrazolin-5-ones exist predominantly in the OH form, although in aqueous solution, they are mostly in NH form.
- 社団法人日本薬学会の論文
- 1969-07-25
著者
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中井 義昭
Central Research Laboratory Daiichi Seiyaku Co. Ltd.
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佐野 光司
Central Research Laboratory, Daiichi Seiyaku Co., Ltd.
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伊藤 勲
Central Research Laboratory, Daiichi Seiyaku Co., Ltd.
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内藤 武男
Central Research Laboratory, Daiichi Seiyaku Co., Ltd.
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佐野 光司
Research Institute, Daiichi Seiyaku Co., Ltd.
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内藤 武男
Research Laboratories, Daiichi Seiyaku Co., Ltd.
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内藤 武男
Research Laboratories Daiichi Seiyaku Co. Ltd.
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佐野 光司
Research Institute Daiichi Seiyaku Co. Ltd.
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伊藤 勲
Central Research Laboratory Daiichi Seiyaku Co. Ltd.
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