4-undecylphenylboronic 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: 4-undecylphenylboronic acid
• 英文别名: (4-undecylphenyl)boronic acid
• 化学式: C₁₇H₂₉BO₂
• 分子量: 276.227
• InChiKey: CGMZNRHLKZJXFR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.44
• 重原子数：
  20
• 可旋转键数：
  11
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-undecylphenylboronic acid 、 4'-bromo-2,2',3-trifluoro-4-hexyloxybiphenyl 在 四(三苯基膦)钯 、 sodium carbonate 作用下， 以 乙二醇二甲醚 为溶剂， 以39%的产率得到2,2',3-trifluoro-4-hexyloxy-4''-undecylterphenyl
  参考文献：
  名称：

  Glendenning, Margaret E.; Goodby, John W.; Hird, Michael, Journal of the Chemical Society. Perkin Transactions 2 (2001), 1999, # 3, p. 481 - 491

  摘要：

  DOI：
• 作为产物：
  描述：

  4-硝基苯酚三氟甲基磺酸酯 在 2-双环己基膦-2',6'-二甲氧基联苯 、 盐酸 、 potassium phosphate monohydrate 、 potassium hydrogen fluoride 、 palladium on activated charcoal 、 氢气 、 palladium diacetate 、 三乙胺 、 sodium nitrite 作用下， 以 1,4-二氧六环 、 甲醇 、 乙醇 、 水 、 甲苯 为溶剂， 反应 1.5h， 生成 4-undecylphenylboronic acid
  参考文献：
  名称：

  Design and synthesis of boronic acid inhibitors of endothelial lipase

  摘要：

  Endothelial lipase (EL) and lipoprotein lipase (LPL) are homologous lipases that act on plasma lipoproteins. EL is predominantly a phospholipase and appears to be a key regulator of plasma HDL-C. LPL is mainly a triglyceride lipase regulating (V)LDL levels. The existing biological data indicate that inhibitors selective for EL over LPL should have anti-atherogenic activity, mainly through increasing plasma HDL-C levels. We report here the synthesis of alkyl, aryl, or acyl-substituted phenylboronic acids that inhibit EL. Many of the inhibitors evaluated proved to be nearly equally potent against both EL and LPL, but several exhibited moderate to good selectivity for EL. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.12.043

文献信息

• Synthesis and thermotropic liquid crystalline properties of calamitic molecules with laterally attached hydrophilic groups: Y-shaped three-block molecules which can form smectic and columnar mesophases
  作者：Rene Plehnert、Jörg Andreas Schröter、Carsten Tschierske

  DOI：10.1039/a803043j

  日期：——

  The synthesis and the thermotropic liquid crystalline properties of calamitic mesogens (p-terphenyl derivatives, a biphenyl and a p-quintaphenyl derivative) with a laterally attached hydrophilic group (1,2-diol groups, primary and secondary amides, polyether chains, crown ether units, carbohydrate units, a hydrazide, a quaternary ammonium salt, a carboxylic acid and a sodium carboxylate) are reported. The compounds were investigated by means of polarizing microscopy and calorimetry. The influence of the type of the polar group, of the length of the rigid core and the position of the connection of the hydrophilic group with the rod-like rigid core have been investigated. Many of these amphiphilic molecules can form monolayer S A phases. If a sufficient amount of hydrogen bonding is available their mesophase stability can be higher than that of related compounds with other lateral substituents. Rectangular columnar mesophases can be found for compounds with rather large and flexible polar lateral substituents (polyether chains) fixed to the center of the rigid terphenyl unit. These columnar phases should represent ribbon phases resulting from the collapse of the smectic layers (modulated smectic phases). The proposed model is also related to that suggested for supermolecular structures of triblock copolymers. Thus, these molecules can be regarded as low molecular weight block compounds consisting of three different and incompatible molecular parts.

  报道了带有侧向亲水基团（如1,2-二醇基、初级和次级酰胺、聚醚链、冠醚单元、糖单位、肼、季铵盐、羧酸和钠盐）的柱状液晶 (p-三苯基衍生物、联苯和p-五苯基衍生物) 的合成及其热驱动液晶特性。通过偏振光显微镜和热量计对这些化合物进行了研究。探讨了极性基团的类型、刚性核心的长度以及亲水基团与杆状刚性核心连接位置的影响。这些两性分子中的许多可以形成单层 S_A 相。如果有足够的氢键相互作用，它们的介相稳定性可能高于其他侧向取代基的相关化合物。对于那些带有较大且灵活的极性侧向取代基（聚醚链）并固定在刚性三苯基单元中心的化合物，可以观察到矩形柱状介相。这些柱状相应代表了由层状相 collapse 所形成的带状相（调制层状相）。所提出的模型也与对三嵌段共聚物超分子结构的建议相关。因此，这些分子可以被视为由三部分不同且不相容的低分子量嵌段化合物。