2-fluoro-4-(n-dodecyloxy)benzoic acid | 122265-77-4

• 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-fluoro-4-(n-dodecyloxy)benzoic acid
• 英文别名: 4-(dodecyloxy)-2-fluorobenzoic acid；4-dodecyloxy-2-fluorobenzoic acid；4-Dodecoxy-2-fluorobenzoic acid
• CAS: 122265-77-4
• 化学式: C₁₉H₂₉FO₃
• 分子量: 324.436
• InChiKey: OUKJURKDSBRJBY-UHFFFAOYSA-N

物化性质

• 熔点：
  86.7 °C(Solv: methanol (67-56-1); water (7732-18-5))
• 沸点：
  420.5±25.0 °C(Predicted)
• 密度：
  1.040±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  7.3
• 重原子数：
  23
• 可旋转键数：
  13
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.63
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2-fluoro-4-(n-dodecyloxy)benzoic acid 在 草酰氯 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 16.0h， 生成 N'-(4-(dodecyloxy)benzoyl)-N-(4-(dodecyloxy)-2-fluorobenzoyl)hydrazine
  参考文献：
  名称：

  Liquid Crystals Derived from Semifluorinated Alkoxybenzoyl Hydrazines

  摘要：

  A variety of liquid crystals with semifluorinated tails including 4-alkoxybenzoic acids (1d-h), 4-alkoxybenzoyl hydrazines (2d-h), and N,N'-bis(4-alkoxybenzoyl) hydrazines (3d-m) have been synthesized, and their properties are compared with their perhydrogenated analogs. Semifluorination in compounds 1d-h suppressed nematic phases, and semifluorinated compounds 2d-h exhibit mesogenic behavior where none is found in their perhydrogenated counterparts. Compounds 3a-c with perhydrogenated chains display Cub and SmC phases. Introduction of one semifluorinated chain, 3d-h suppresses the Cub phase but induces a SmA phase, with lower melting but higher clearing temperatures compared to compounds with two semifluorinated chains, 3i-m. The mesogenic properties of some selected binary mixtures of these compounds 3a-d and some lateral fluoro substituted N,N'-bis (4-alkoxybenzoyl) hydrazines 7-9 are also discussed.

  DOI：

  10.1080/15421400902841478
• 作为产物：
  描述：

  2-fluoro-4-(n-dodecyloxy)benzonitrile 以 硫酸 、 溶剂黄146 为溶剂， 以65%的产率得到2-fluoro-4-(n-dodecyloxy)benzoic acid
  参考文献：
  名称：

  铁电液晶。第9部分。结合有反式-1,4-二取代的环己烷环的侧向取代的苯甲酸苯酯†

  摘要：

  约65结合了多样化的苯基苯甲酸酯反式-1,4-二取代的环己烷环和已经合成了至少一个侧向取代基。已经系统地研究了这些材料的液晶转变温度对酯的不同位置上的各种侧向取代基（F，Cl，CN和Br）的依赖性。已经对标准酯的不同位置上多达四个F原子的影响进行了深入研究，并为宽近晶C介晶范围确定了最佳组合。结果，制备了包含4-烷氧基-2，3-二氟苯甲酸部分的三个同源系列。将另外的CC键引入连接至这些酯中的一些酯的环己烷环的烷基链中，并确定所得的转变温度的改变。三酯系列结合有横向的取代基和光学活性的（+）-（S）-（1-甲基庚基）氧基取代基也已经合成，并且观察到类似的效果。这些材料可用作电光显示设备应用的手性近晶C混合物的重要成分。

  DOI：

  10.1002/hlca.19890720319

文献信息

• Influence of fluoro substituents on the mesophase behaviour of banana-shaped molecules
  作者：J. P. Bedel、J. C. Rouillon、J. P. Marcerou、M. Laguerre、H. T. Nguyen、M. F. Achard

  DOI：10.1039/b201467j

  日期：2002.7.26

  Three new series of bent-shaped five-ring liquid crystals, based on the ester of isophthalic acid as the central core and azomethine linkages, are presented. They differ by the number and the position of halogeno substituents on the outer rings. This lateral substitution strongly influences the type of mesophases formed. Calculations were performed to determine the modification of the distribution of charge along the different molecules.

  基于间苯二甲酸酯作为中心核以及偶氮次甲基键合，本文介绍了三种新的弯形五环液晶系列。它们的外环上卤素取代基的数量和位置不同。这种侧向取代强烈影响所形成的介晶相类型。为了确定沿不同分子电荷分布的改变，进行了计算。
• Ferroelectric and antiferroelectric switching behaviour in new unsymmetrical bent-core compounds derived from 3-hydroxybenzoic acid
  作者：H. N. Shreenivasa Murthy、B. K. Sadashiva

  DOI：10.1039/b419404g

  日期：——

  Herein we report the synthesis and characterization of several achiral bent-core unsymmetrical compounds exhibiting mesomorphic properties. The lower homologues in two series of compounds show a columnar phase with a rectangular lattice whereas the middle homologues exhibit a novel columnar phase with an oblique lattice. Interestingly, three of the higher homologues of the laterally unsubstituted compounds exhibit a smectic phase with ferroelectric switching characteristics and the analogous fluoro-substituted compounds show a smectic phase that is composed of antiferroelectric conglomerates.

  在此，我们报告了几种表现出介形特性的非手性弯曲核不对称化合物的合成和表征。两个系列化合物中的低级同系物显示出具有矩形晶格的柱状相，而中级同系物则显示出具有斜晶格的新型柱状相。有趣的是，横向未取代化合物的三个较高同系物显示出一种具有铁电开关特性的晶相，而类似的氟取代化合物则显示出一种由反铁电聚集体组成的晶相。
• Influence of a fluorine substituent on the mesomorphic properties of unsymmetrical five-ring bent-core compounds
  作者：H. N. Shreenivasa Murthy、B. K. Sadashiva

  DOI：10.1039/b406548b

  日期：——

  The synthesis and mesomorphic properties of unsymmetrical five-ring bent-core compounds containing a fluorine substituent in one of the arms are reported. A comparison of the properties with the symmetrical compounds having two fluorine substituents indicates that the position of this substituent has an influence on the nature of the mesophase observed. Evidence for the occurrence of a transition from the rectangular columnar (B1) phase to an antiferroelectric lamellar (B2) phase, which is rather rare, is provided. The mesophases have been characterized using polarized light microscopy, differential scanning calorimetry, X-ray diffraction and electro-optical studies.

  报告了在一个臂中含有一个氟取代基的非对称五环弯曲核化合物的合成和介观性质。与具有两个氟取代基的对称化合物的性质比较表明，该取代基的位置对观察到的介相性质有影响。研究还提供了从矩形柱状（B1）相向反铁电层状（B2）相过渡的证据，这种过渡相当罕见。利用偏光显微镜、差示扫描量热法、X 射线衍射和电光研究对介相进行了表征。