Acid-catalyzed Acetal Formation from Benzoylacetone

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概要

• 論文の詳細を見る

• When mixed with methanol containing a catalytic amount of sulfuric acid and kept at 10℃ for 10 h, benzoylacetone (BA) gave two products methoxylated on the side of the acetyl group (viz., 3,3-dimethoxy-1-phenyl-1-butanone (AK) and 3-methoxy-1-phenyl-2-buten-1-one (A'E)) but no products methoxylated on the side of the benzoyl group (4,4-dimethoxy-4-phenyl-2-butanone (BK) and 4-methoxy-4-phenyl-3-buten-2-one (B'E)) or products methoxylated on both carbonyls. Furthermore, BA did not undergo acid-catalyzed methanolysis under our conditions. The reason why acetal formation of the acetyl carbonyl occurs more easily than that of the benzoyl carbonyl, and the relationship of AK and A'E, which is not an intermediate in the formation of AK from BA even though AK can be formed from it, are discussed.

• 公益社団法人日本薬学会の論文
• 1982-07-25

著者

• 伊藤 和夫

  第一薬科大学

• Nakashima Toshihiro

  Department of Physiology, Kyoto Institute of Technorogy

• 小杉 善雄

  名古屋大学

• 古家 義朗

  Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University

• 小杉 善雄

  Department of Synthetic Chemistry, Faculty of Engineering, Nagoya University

• Nakashima Toshihiro

  Department Of Applied Biology Kyoto Institute Of Technology

• Nakashima Toshihiro

  Department Of Industrial Chemistry Faculty Of Engineering Kumamoto University

• 村山 孝司

  Department Of Industrial Chemistry Faculty Of Engineering Kumamoto University

• 伊藤 和夫

  Daiichi College of Pharmaceutical Sciences, Minami-ku

• 山口 一記

  Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University

• 前田 義孝

  Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University

• 前田 義孝

  Department Of Industrial Chemistry Faculty Of Engineering Kumamoto University

• 古家 義朗

  熊本大 工

• 山口 一記

  Department Of Industrial Chemistry Faculty Of Engineering Kumamoto University

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