(E,E)-2,5-bis(2,5-dihexylstyryl)hydroquinone

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: (E,E)-2,5-bis(2,5-dihexylstyryl)hydroquinone
• 英文别名: 2,5-bis[(E)-2-(2,5-dihexylphenyl)ethenyl]benzene-1,4-diol
• 化学式: C₄₆H₆₆O₂
• 分子量: 651.029
• InChiKey: SOUXBBJCDTZTSH-JWTBXLROSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  17.6
• 重原子数：
  48
• 可旋转键数：
  24
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.52
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1,4-二(溴甲基)-2,5-二甲氧基苯 在 potassium tert-butylate 、 二苯基膦酸锂 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 19.0h， 生成 (E,E)-2,5-bis(2,5-dihexylstyryl)hydroquinone
  参考文献：
  名称：

  1,4-Benzoquinones with Styryl Substituents

  摘要：

  2-Styryl-1,4-benzoquinone (1) and compounds 2 and 3 containing 1 as a substructure all proved to be highly reactive towards thermal or photochemical [4pi + 2pi] cyclodimerization reactions. Chemo-, regio- and stereoselective processes lead to dimers (compounds 1-10), which can undergo secondary reactions consisting of the addition of nucleophiles combined with a twofold keto-enol tautomerism (10 --> 12). An alternative process is dehydrogenation/oxidation followed by an intramolecular [4pi + 2pi] cycloaddition (10 --> 11). The same selective [4pi + 2pi] cyclodimerization can be observed in solution upon irradiation (e.g., 1a --> 10a), in contrast to irradiation in the crystalline state which yields a [2pi + 2pi] dimer (e.g., 1a --> 13). If more than one styrylbenzoquinone moiety is present in the same molecule the oligomers 2a (n = 1-3) and 3a (n = 1-4) are obtained. ((C) Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002).

  DOI：

  10.1002/1099-0690(200209)2002:18<3162::aid-ejoc3162>3.0.co;2-h

文献信息

• 1,4-Benzoquinones with Styryl Substituents
  作者：Isabella Brehm、Sabine Hinneschiedt、Herbert Meier

  DOI：10.1002/1099-0690(200209)2002:18<3162::aid-ejoc3162>3.0.co;2-h

  日期：2002.9

  2-Styryl-1,4-benzoquinone (1) and compounds 2 and 3 containing 1 as a substructure all proved to be highly reactive towards thermal or photochemical [4pi + 2pi] cyclodimerization reactions. Chemo-, regio- and stereoselective processes lead to dimers (compounds 1-10), which can undergo secondary reactions consisting of the addition of nucleophiles combined with a twofold keto-enol tautomerism (10 --> 12). An alternative process is dehydrogenation/oxidation followed by an intramolecular [4pi + 2pi] cycloaddition (10 --> 11). The same selective [4pi + 2pi] cyclodimerization can be observed in solution upon irradiation (e.g., 1a --> 10a), in contrast to irradiation in the crystalline state which yields a [2pi + 2pi] dimer (e.g., 1a --> 13). If more than one styrylbenzoquinone moiety is present in the same molecule the oligomers 2a (n = 1-3) and 3a (n = 1-4) are obtained. ((C) Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002).