tetraethyl [2,5-dihexyl-1,4-phenylenebis(methylene)]diphosphonate | 438590-54-6

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机膦酸及其衍生物
• 英文名称: tetraethyl [2,5-dihexyl-1,4-phenylenebis(methylene)]diphosphonate
• 英文别名: 1,4-Bis[[diethoxy(oxido)phosphaniumyl]methyl]-2,5-dihexylbenzene；1,4-bis[[diethoxy(oxido)phosphaniumyl]methyl]-2,5-dihexylbenzene
• CAS: 438590-54-6
• 化学式: C₂₈H₅₂O₆P₂
• 分子量: 546.665
• InChiKey: RVHOGPUCQJABJM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.4
• 重原子数：
  36
• 可旋转键数：
  22
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.79
• 拓扑面积：
  83
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  tetraethyl [2,5-dihexyl-1,4-phenylenebis(methylene)]diphosphonate 在 sodium tetrahydroborate 、 四(三苯基膦)钯 、 sodium hydride 、 magnesium sulfate 、 silver(l) oxide 作用下， 以 四氢呋喃 、 乙二醇二甲醚 、 乙醚 为溶剂， 反应 59.0h， 生成 2-[(E)-2-{4-[(E)-2-(2,5-dioxocyclohexa-1,3-dien-1-yl)ethenyl]-2,5-dihexylphenyl}ethenyl]-1,4-benzoquinone
  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
• 作为产物：
  描述：

  1,4-二(正己基)苯 在 氢溴酸 作用下， 以 溶剂黄146 为溶剂， 反应 148.0h， 生成 tetraethyl [2,5-dihexyl-1,4-phenylenebis(methylene)]diphosphonate
  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).