2,3-difluoro-4-heptyl-4"-pentyl-p-terphenyl | 121218-90-4

• 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: 2,3-difluoro-4-heptyl-4"-pentyl-p-terphenyl
• 英文别名: 2,3-difluoro-4-heptyl-4''-pentylterphenyl；1,1':4',1''-Terphenyl,2,3-difluoro-4-heptyl-4''-pentyl-；2,3-difluoro-1-heptyl-4-[4-(4-pentylphenyl)phenyl]benzene
• CAS: 121218-90-4
• 化学式: C₃₀H₃₆F₂
• 分子量: 434.613
• InChiKey: SMMLALBZULZMIT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  11.3
• 重原子数：
  32
• 可旋转键数：
  12
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1,2-二氟苯 在 palladium on activated charcoal 、 四(三苯基膦)钯 磷酸酐 、 正丁基锂 、 硼酸三异丙酯 、 氢气 、 sodium carbonate 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 32.0h， 生成 2,3-difluoro-4-heptyl-4"-pentyl-p-terphenyl
  参考文献：
  名称：

  Gray, George W.; Hird, Michael; Lacey, David, Journal of the Chemical Society. Perkin transactions II, 1989, p. 2041 - 2054

  摘要：

  DOI：

文献信息

• The effect of carborane, bicyclo[2.2.2]octane and benzene on mesogenic and dielectric properties of laterally fluorinated three-ring mesogens
  作者：Adam Januszko、Kristin L. Glab、Piotr Kaszynski、Kaushik Patel、Robert A. Lewis、Georg H. Mehl、Michael D. Wand

  DOI：10.1039/b600068a

  日期：——

  Six series of structurally similar compounds containing 12- and 10-vertex p-carborane (A and B), bicyclo[2.2.2]octane (C), and benzene (D) were prepared and their mesogenic and dielectric properties investigated. Comparative analysis showed that all carborane derivatives form significantly less stable mesophases than their carbocyclic analogs, however they exhibit a relatively high shielding ability for lateral fluorination. Depression of the clearing temperature upon fluorination of series 1, 3, and 5 is approximately constant for each series A–D and correlates with the diameter of the ring (the slope = 14.8 °C Å−1 and R2 = 0.997). Compounds in series 2 (X = F) were used as low concentration additives to a nematic host, 6-CHBT. Dielectric parameters were extrapolated to pure additives and analyzed using the Maier–Meier equation. The Kirkwood factors g and apparent order parameters Sapp that are required to reproduce the extrapolated dielectric values follow the trend in the size of ring . The smallest g (0.47) and the largest Sapp (6.3) are obtained for carborane 2A, and the largest g (0.69) and the smallest Sapp (0.7) are obtained for the terphenyl derivative 2D. The increase of Sapp in the series D→A corresponds to the increasing disorder of the nematic solution with increasing size of ring .

  合成了六系列结构相似的化合物，包含有12和10顶点p-碳硼烷（A和B）、双环[2.2.2]辛烷（C）以及苯（D），并研究了它们的液晶性和介电性质。比较分析表明，所有碳硼烷衍生物的液晶相稳定性都明显低于其碳环类似物，但它们展示出较高的侧向氟化屏蔽能力。系列1、3和5的熔点降低值在氟化后大致恒定，对于A至D系列的每个系列，且与环的直径相关（斜率 = 14.8 °C Å−1，R² = 0.997）。系列2中的化合物（X = F）被用作向列相主体6-CHBT中的低浓度添加剂。介电参数被外推到纯添加剂并使用Maier–Meier方程进行分析。复现外推介电值所需的Kirkwood因子g和表观有序参数Sapp遵循环大小的趋势。最小的g（0.47）和最大的Sapp（6.3）获得于碳硼烷2A，最大的g（0.69）和最小的Sapp（0.7）则获得于三联苯衍生物2D。在系列D→A中Sapp的增加对应于随着环尺寸增加而增加的向列相溶液的无序。
• Palladium-catalyzed Suzuki cross-coupling reactions in a microemulsion
  作者：Valery Vashchenko、Alexander Krivoshey、Irina Knyazeva、Alexey Petrenko、John W. Goodby

  DOI：10.1016/j.tetlet.2008.01.013

  日期：2008.2

  An enhancement of palladium-catalyzed Suzuki cross-coupling reactions between substrates possessing long-chain alkyl or oxyalkyl substituents in two-phase media, in the presence of sodium dodecylsulfate, is shown. Quantitative evaluations of the influence of SDS on the reaction rates were determined.

  显示了在十二烷基硫酸钠的存在下，在两相介质中具有长链烷基或氧基烷基取代基的底物之间钯催化的Suzuki交叉偶联反应的增强。确定了SDS对反应速率的影响的定量评估。
• FLUORINATED OLIGOPHENYLS AND THEIR USE IN LIQUID CRYSTAL MATERIALS
  申请人：MERCK PATENT GmbH

  公开号：EP0329752B1

  公开（公告）日：1993-03-17
• SYNERGISTIC HOST-GUEST INTERACTIONS IN FLC MIXTURES FOR INCREASED POLARIZATION AND DECREASED SWITCHING SPEED
  申请人：Pecinovsky Cory

  公开号：US20130200306A1

  公开（公告）日：2013-08-08

  The disclosed subject matter provides a chiral host-guest composition for a ferroelectric liquid crystal mixture, the host-guest composition comprising a chiral guest compound and an achiral host compound, wherein the host-guest composition induces a greater degree of polarization in the liquid crystal mixture than is induced in the mixture with a comparable amount of the chiral guest compound in the absence of the achiral host compound. The chiral guest is a fluorinated compound comprising a aryl or heteroaryl core substituted with an alkyl chain, wherein the alkyl chain includes one or more fluorine atoms, each fluorine atom being bonded to a chiral carbon atom. The achiral host possesses a central thiadiazole core, with at least one aryl/heteroaryl wing, further substituted with alkyl or alkoxy groups.
• US5273680A
  申请人：——

  公开号：US5273680A

  公开（公告）日：1993-12-28