4-n-Nonyl-2,3-difluorophenyl boronic acid | 126334-38-1

• 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-n-Nonyl-2,3-difluorophenyl boronic acid
• 英文别名: (2,3-Difluoro-4-nonylphenyl)boronic acid
• CAS: 126334-38-1
• 化学式: C₁₅H₂₃BF₂O₂
• 分子量: 284.154
• InChiKey: YZPYBLLARCIZPU-UHFFFAOYSA-N

物化性质

• 沸点：
  384.7±52.0 °C(Predicted)
• 密度：
  1.07±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.94
• 重原子数：
  20
• 可旋转键数：
  9
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  4-n-Nonyl-2,3-difluorophenyl boronic acid 在 potassium phosphate 、 四(三苯基膦)钯 、 sodium carbonate 作用下， 以 乙二醇二甲醚 、 N,N-二甲基甲酰胺 为溶剂， 反应 16.0h， 生成 2,2',3-trifluoro-4-nonyl-4"-pentylterphenyl
  参考文献：
  名称：

  Glendenning, Margaret E.; Goodby, John W.; Hird, Michael, Journal of the Chemical Society. Perkin Transactions 2 (2001), 2000, # 1, p. 27 - 34

  摘要：

  DOI：
• 作为产物：
  描述：

  1,2-二氟苯 在 palladium on activated charcoal 盐酸 、 正丁基锂 、 氢气 、 phosphorus pentoxide 作用下， 以 四氢呋喃 、 正己烷 、 Petroleum ether 为溶剂， 反应 18.5h， 生成 4-n-Nonyl-2,3-difluorophenyl boronic acid
  参考文献：
  名称：

  The synthesis and electro-optic properties of liquid crystalline 2-(2,3-difluorobiphenyl-4′-yl)-1,3-dioxanes

  摘要：

  制备了 56 种新型烷基和/或烷氧基二取代的 2-(2,3-二氟联苯-4´-基)-1,3-二氧六环 (DFBPD)。大多数烷基-烷氧基同系物展现出近晶 C 和向列相中間相。相反，多数二烷基化合物展现出近晶 C、近晶 A 和向列相。测定了两个由二氧六环体系构成的铁电混合物的双折射 (Δn)、介电各向异性 (Δε)、自发极化和响应时间。双折射结果与基于不同核心体系的 8 组混合物进行了比较。发现 DFBPD 的整体电光性质与最常用的 8 种铁电显示器材料相当。

  DOI：

  10.1039/a902351h

文献信息

• Dioxane derivatives
  申请人：Central Research Laboratories Limited

  公开号：US05683623A1

  公开（公告）日：1997-11-04

  Dioxane derivatives for use as components in liquid crystal devices (LCDs) of general formula (A), wherein X is CH or B; R.sup.1, R.sup.2 are each A.sup.1, OA.sup.1, OCOA.sup.2, or COOA.sup.2 ; A.sup.1 is a straight or branched chain alkyl group containing from 1 to 20 carbon atoms and may be substituted with one or more F or CN. A.sup.2 is a straight or branched chain alkyl group containing from 1 to 20 carbon atoms and may be substituted with one or more F or CN and if straight may be unsubstituted. Y.sup.1, Y.sup.2, Y.sup.3 may each be (CH.sub.2).sub.p, (CH.sub.2).sub.p COO or OCO(CH.sub.2).sub.p ; p is from 0 to 10, n is 0 or 1, m is 0 or 1, either or both of Z.sub.1 and Z.sub.2 are F and, when not F, are H; Y.sup.4 is a covalent bond or, when n is 0, may be (a) LCDs, containing the devices exhibit very fast switching speed, bi-stable characteristics, enhanced greyscale and storage capabilities and a wide viewing angle.

  二氧六环衍生物可用作通式（A）中的液晶装置（LCD）组分，其中X为CH或B；R.sup.1，R.sup.2分别为A.sup.1，OA.sup.1，OCOA.sup.2或COOA.sup.2；A.sup.1为含1至20个碳原子的直链或支链烷基，并可被一个或多个F或CN取代。A.sup.2为含1至20个碳原子的直链或支链烷基，并可被一个或多个F或CN取代，如果是直链则可以未被取代。Y.sup.1，Y.sup.2，Y.sup.3可以分别为（CH.sub.2）.sub.p，（CH.sub.2）.sub.p COO或OCO（CH.sub.2）.sub.p；p为0至10，n为0或1，m为0或1，Z.sub.1和Z.sub.2中的任意一个或两个为F，当不为F时为H；Y.sup.4为共价键，或当n为0时，可以为（a）LCD，包含这些装置的液晶显示器具有非常快的开关速度、双稳态特性、增强的灰度和存储能力以及广阔的视角。
• Cyanoalkyl difluoro-terphenyl-carboxylate chiral dopants
  作者：Zohra N. Kayani、Robert A. Lewis、Shahzad Naseem

  DOI：10.1016/j.molliq.2012.03.018

  日期：2012.6

  A liquid crystal like difluoroterphenyl chiral dopant was synthesized to match the dimensions of a host chiral dopant mixture. The melting point of the chiral dopants was decreased by increasing the length of the alkyl chain. The melting point of the chiral dopants also decreased when fluorine was on the same ring as the ester i.e. at 2 '', 3 '' position. These dopants were formulated with terphenyl host mixture and liquid crystal properties were assessed. New dopants, when added to the host mixture, maintain SmA(1) but the SmC2 phase was reduced markedly. There was a decrease in spontaneous polarisation when fluorine was on the same ring as the ester i.e. at 2 '', 3 '' position. As the molecular weight of the chiral dopant increased (pentyl -> heptyl -> nonyl), spontaneous polarisation decreased. (C) 2012 Elsevier B.V. All rights reserved.
• <i>Trans</i>−1,2-Difluorostilbenes: Promising Materials for High Dielectric Biaxiality Ferroelectric Mixtures
  作者：John W. Goodby、Paul Hindmarsh、Michael Hird、Robert A. Lewis、Kenneth J. Toyne

  DOI：10.1080/10587250108025062

  日期：2001.8

  A range of two- and three-ring liquid crystals have been synthesised that incorporate a trans-1,2-difluoroethene linking group. Some of the materials have surprisingly low melting points and high smectic C phase stability, and they exhibit the ideal phase sequence for ferroelectric hosts of smectic C to smectic A to nematic. The synthesis was accomplished in a convergent manner through the use of low-temperature lithiations to generate organometallics based on boron and tin. Palladium-catalysed cross-couplings and Michael-type reactions were used to generate the final mesogenic materials. The polar fluoro substituents enable the generation of ferroelectric mixtures with a high dielectric biaxiality which is very important in tauV minimum driving schemes. The alkenic linking group in stilbenes normally confers instability, but the difluoro-substituted analogues are stable compounds.
• The synthesis and electro-optic properties of liquid crystalline 2-(2,3-difluorobiphenyl-4′-yl)-1,3-dioxanes
  作者：Chu Chuan Dong、Peter Styring、John W. Goodby、Lawrence K. M. Chan

  DOI：10.1039/a902351h

  日期：——

  Fifty-six novel alkyl and/or alkoxy disubstituted 2-(2,3-difluorobiphenyl-4′-yl)-1,3-dioxanes (DFBPD) were prepared. Smectic C and nematic mesophases were exhibited by most of the alkyl-alkoxy homologues. Conversely, most of the dialkyl compounds exhibited smectic C, smectic A and nematic phases. The birefringence (Δn), dielectric anisotropy (Δε), spontaneous polarisation and response times of two ferroelectric mixtures formulated from the dioxanyl systems were determined. The birefringence results were compared with eight other groups of mixtures where the materials were based on different core systems. The overall electro-optic properties of the DFBPDs were found to be comparable to the best of the eight most commonly used materials in ferroelectric display devices.

  制备了 56 种新型烷基和/或烷氧基二取代的 2-(2,3-二氟联苯-4´-基)-1,3-二氧六环 (DFBPD)。大多数烷基-烷氧基同系物展现出近晶 C 和向列相中間相。相反，多数二烷基化合物展现出近晶 C、近晶 A 和向列相。测定了两个由二氧六环体系构成的铁电混合物的双折射 (Δn)、介电各向异性 (Δε)、自发极化和响应时间。双折射结果与基于不同核心体系的 8 组混合物进行了比较。发现 DFBPD 的整体电光性质与最常用的 8 种铁电显示器材料相当。
• Glendenning, Margaret E.; Goodby, John W.; Hird, Michael, Journal of the Chemical Society. Perkin Transactions 2 (2001), 2000, # 1, p. 27 - 34
  作者：Glendenning, Margaret E.、Goodby, John W.、Hird, Michael、Toyne, Kenneth J.

  DOI：——

  日期：——