彭啸, 吴松福, 毛宇, 戴晓畅. 丙二酸发生羟醛缩合时的二次脱羧反应[J]. 云南大学学报(自然科学版), 2004, 26(3): 251-253.
引用本文: 彭啸, 吴松福, 毛宇, 戴晓畅. 丙二酸发生羟醛缩合时的二次脱羧反应[J]. 云南大学学报(自然科学版), 2004, 26(3): 251-253.
shu
PENG Xiao, WU Song-fu, MAO Yu, DAI Xiao-chang. The second decarboxylation of malonic acid in aldol condensation[J]. Journal of Yunnan University: Natural Sciences Edition, 2004, 26(3): 251-253.
Citation: PENG Xiao, WU Song-fu, MAO Yu, DAI Xiao-chang. The second decarboxylation of malonic acid in aldol condensation[J]. Journal of Yunnan University: Natural Sciences Edition, 2004, 26(3): 251-253.
shu

丙二酸发生羟醛缩合时的二次脱羧反应

The second decarboxylation of malonic acid in aldol condensation

    摘要
  • 摘要: 丙二酸与对羟基苯甲醛及对羟基间甲氧基苯甲醛反应会发生第二步脱羧,生成对羟基苯乙烯及对羟基间甲氧基苯乙烯,是一种形成对羟基苯乙烯的新方法.而间羟基及其它烷氧基取代苯甲醛则不能发生此反应,讨论了对羟基苯甲醛与丙二酸发生脱羧反应的电子效应.

     

    Abstract: 4-Hydroxybenzaldehyde and 4-hydroxy-3-methoxybenzaldehyde will be turned into 4-hydroxybenzene and 4-hydroxy-3-methyoxybenzene when they react with malonic acid througth decarboxylation of two times.This is a novel method to form 4-hydroxybenzene.However,3-hydroxybenzaldehyde and other similar compounds can’t decarboxylate in their second step.The electric effection in this reaction is discussed.

     

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