2-Ethynyl-1,3-difluoro-5-(4-propyl-cyclohexyl)-benzene | 144911-50-2

• 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-Ethynyl-1,3-difluoro-5-(4-propyl-cyclohexyl)-benzene
• CAS: 144911-50-2
• 化学式: C₁₇H₂₀F₂
• 分子量: 262.343
• InChiKey: DLYMNYZZYOJPEQ-JOCQHMNTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.02
• 重原子数：
  19.0
• 可旋转键数：
  3.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  1-溴-3,5-二氟苯 、 2-Ethynyl-1,3-difluoro-5-(4-propyl-cyclohexyl)-benzene 在 copper(l) iodide 、 四(三苯基膦)钯 作用下， 生成 2-(3,5-Difluoro-phenylethynyl)-1,3-difluoro-5-(4-propyl-cyclohexyl)-benzene
  参考文献：
  名称：

  New Nematics Incorporating a 2,6-Difluorophenyl Acetylene Group

  摘要：

  A large series of thin film transistor compatible nematic liquid crystals incorporating a 2,6-difluorophenyl acetylene group have been synthesised. Most of them exhibit high clearing points and an increased dielectric anisotropy.

  DOI：

  10.1080/10587259508038685
• 作为产物：
  描述：

  1-(1-hydroxy-4-propylcyclohexyl)-3,5-difluorobenzene 在 palladium on activated charcoal 、 copper(l) iodide 、 钯 氢氧化钾 、 正丁基锂 、 氢气 、 碘 、 4-甲基苯磺酸吡啶 作用下， 以 四氢呋喃 、 甲醇 、 乙二醇 、 xylene 为溶剂， 生成 2-Ethynyl-1,3-difluoro-5-(4-propyl-cyclohexyl)-benzene
  参考文献：
  名称：

  Highly Birefringent Nematic Liquid Crystals for Reflective STN Applications

  摘要：

  An important parameter of any LCD containing portable electronic device is a low power requirement, The reflective STN display mode offers a moderate to high information content display with low power consumption, One method to realise colour in this mode is to use a large retardation (d Deltan) value in the cell. For a cell gap of 6 mum, and a retardation of similar to1.5, a birefringence (Deltan) of greater than +0.2 is necessary. To achieve such a value in an STN LC mixture, materials with broad nematic range, good solubility and a Deltan value of < +0.25 are required.A study of the trans-cyclohexyldifluorophenyltolane core structure was made and a large number of dialkyl, alkenyl-alkyl and alkoxy materials were synthesised and characterised. These materials possess low to moderate melting points, broad purely nematic mesophases. a high Deltan and very good solubility in nematic LC hosts. They are suitable materials for inclusion in mixtures for colour reflective STN displays.

  DOI：

  10.1080/10587250108025063