(3,4-dihydroxybenzoyloxy)acetic acid

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (3,4-dihydroxybenzoyloxy)acetic acid
• 英文别名: 2-(3,4-Dihydroxybenzoyl)oxyacetic acid
• 化学式: C₉H₈O₆
• 分子量: 212.159
• InChiKey: ZOHGVFFINRHNIM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  104
• 氢给体数：
  3
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  原儿茶酸 在 palladium on activated charcoal sodium hydroxide 、 氢气 作用下， 以 水 为溶剂， 反应 24.0h， 生成 (3,4-dihydroxybenzoyloxy)acetic acid
  参考文献：
  名称：

  Effects of electron-withdrawing substituents on DPPH radical scavenging reactions of protocatechuic acid and its analogues in alcoholic solvents

  摘要：

  The DPPH (2,2-diphenyl-l-picrylhydrazyl) radical scavenging activity of protocatechuic acid (3,4-dihydroxybenzoic acid) and its related catechols was examined. Compounds possessing strong electron-withdrawing substituents showed high activity. NMR analysis of the reaction mixtures of catechols and DPPH radical in methanol showed the formation of methanol adducts. The results suggest that high radical scavenging activity of catechols in alcohol is due to a nucleophilic addition of an alcohol molecule on o-quinones, which leads to a regeneration of a catechol structure. Furthermore, the radical scavenging activity in alcohols would largely depend on the electron-withdrawing/donating substituents, Since they affect the susceptibility toward nucleophilic attacks on o-quinone. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2005.06.040

文献信息

• Effects of electron-withdrawing substituents on DPPH radical scavenging reactions of protocatechuic acid and its analogues in alcoholic solvents
  作者：Shizuka Saito、Jun Kawabata

  DOI：10.1016/j.tet.2005.06.040

  日期：2005.8

  The DPPH (2,2-diphenyl-l-picrylhydrazyl) radical scavenging activity of protocatechuic acid (3,4-dihydroxybenzoic acid) and its related catechols was examined. Compounds possessing strong electron-withdrawing substituents showed high activity. NMR analysis of the reaction mixtures of catechols and DPPH radical in methanol showed the formation of methanol adducts. The results suggest that high radical scavenging activity of catechols in alcohol is due to a nucleophilic addition of an alcohol molecule on o-quinones, which leads to a regeneration of a catechol structure. Furthermore, the radical scavenging activity in alcohols would largely depend on the electron-withdrawing/donating substituents, Since they affect the susceptibility toward nucleophilic attacks on o-quinone. (c) 2005 Elsevier Ltd. All rights reserved.