3,4,5-trifluorphenylboric acid | 247924-83-0

• 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: 3,4,5-trifluorphenylboric acid
• 英文别名: 3,4,5-trifluorophenylboric acid；(3,4,5-trifluorophenoxy)boronic acid
• CAS: 247924-83-0
• 化学式: C₆H₄BF₃O₃
• 分子量: 191.902
• InChiKey: FWUHUNUOUDQTFG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.45
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  49.7
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  3,4,5-trifluorphenylboric acid 、 对溴苯甲醛 在 四(三苯基膦)钯 、 potassium carbonate 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 15.0h， 以24.6 g的产率得到4-(3,4,5-trifluorophenyl)benzaldehyde
  参考文献：
  名称：

  LIQUID CRYSTAL COMPOUND HAVING 2, 6-DIFLUOROPHENYL ETHER STRUCTURE AND LIQUID CRYSTAL COMPOSITION THEREOF

  摘要：

  本发明涉及一种具有2,6-二氟苯醚结构的化合物，可用作有机电子材料和药物/农药，特别是液晶显示器设备的材料，并且涉及一种生产该化合物的有效方法。本发明提供了一种由通式（1）表示的化合物，还提供了含有该化合物的液晶组合物和使用该液晶组合物的液晶显示器设备。通过使用通式（1）表示的化合物作为液晶组合物的成分，可以制备出具有低粘度和在广泛温度范围内的液晶相的液晶组合物。因此，该化合物作为液晶显示器设备所需具有快速响应的液晶组合物的组成成分非常有用。

  公开号：

  US20160152589A1

文献信息

• Processes of preparing condensed polymers with polycarboxylic acids and polyamines
  申请人：Japan Science and Technology Corporation

  公开号：US06586555B1

  公开（公告）日：2003-07-01

  This invention provides processes of the preparation of polyamides, polyimides, and polyamideimides, which are easy to purify after reactions, from polycarboxylic acids and polyamines in high yield without side reactions such as a change of color to black by direct polycondensation reaction with heat, especially processes of preparing aromatic polyamides (aramids), aromatic polyimides, and aromatic polyamideimides, which are difficult to synthesize in direct polycondensation reaction. Polyamides, polymides, and polyamideimides are prepared in high yield by the polycondensation of aromatic dicarboxylic acids, aromatic tetracarboxylic acids or aromatic tricarboxylic acids and aromatic diamines, using arylboric acids such as 3,4,5-trifluorophenylboric acids as polycondensation catalysts, in a mixed solvent of pentamethylbenzene and N-methylpyrrolidinone or a mixed solvent of m-terphenyl and N-butylpyrrolidinone.

  本发明提供了一种从多羧酸和多胺中高产率地制备聚酰胺、聚酰亚胺和聚酰胺亚胺的方法，这些方法在反应后易于纯化，通过热直接聚合反应不会发生黑色变色等副反应，特别是制备芳香族聚酰胺（芳纶）、芳香族聚酰亚胺和芳香族聚酰胺亚胺的方法，这些聚合物在直接聚合反应中很难合成。通过使用芳基硼酸催化剂，如3,4,5-三氟苯基硼酸，以五甲基苯和N-甲基吡咯烷酮或m-三苯基和N-丁基吡咯烷酮混合溶剂为反应介质，通过芳香族二羧酸、芳香族四羧酸或芳香族三羧酸和芳香族二胺的聚合反应，高产率地制备聚酰胺、聚酰亚胺和聚酰胺亚胺。
• Compound having tetrahydronaphthalene skeleton and liquid crystal composition containing same
  申请人：Dainippon Ink and Chemicals, Inc.

  公开号：US06746728B1

  公开（公告）日：2004-06-08

  A tetrahydronaphthalene derivative represented by the general formula (I) and a liquid crystal composition containing the same. A compound represented by the general formula (I) shows superior liquid crystallinity and co-solubility with conventional liquid crystal compounds and compositions. Furthermore, addition of such a compound enables the threshold voltage to be significantly reduced with almost no deleterious effect on the responsiveness. In addition, a compound of the present invention can also be easily produced industrially, is colorless, and is chemically stable. Consequently, liquid crystal compositions containing such a compound are extremely useful as liquid crystals, and are particularly suitable for liquid crystal displays requiring a wide operating temperature range, low voltage driving and a high response speed.

  一种由通式(I)表示的四氢萘衍生物及其所含的液晶组合物。通式(I)所表示的化合物具有优越的液晶性和与传统液晶化合物和组合物的共溶性。此外，添加这种化合物可以显著降低阈值电压，几乎不会对响应性产生不良影响。此外，本发明的化合物也可以在工业上轻松生产，无色，化学稳定。因此，含有这种化合物的液晶组合物非常有用作为液晶，特别适用于需要广泛操作温度范围、低电压驱动和高响应速度的液晶显示器。
• Chlorofluorobenzene compound, optically isotropic liquid crystal medium, and optical device
  申请人：JNC Corporation

  公开号：US08343595B2

  公开（公告）日：2013-01-01

  A liquid crystal compound and a liquid crystal medium are described. The liquid crystal compound is stable to heat and light and has a large dielectric anisotropy and a large optical anisotropy. The liquid crystal medium has a wide temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase. The liquid crystal compound has 4 or 5 benzene rings, one of which is a chlorofluorobenzene ring. The liquid crystal medium is characterized in containing the liquid crystal compound and a chiral dopant and exhibiting an optically isotropic liquid crystal phase.

  描述了一种液晶化合物和液晶介质。该液晶化合物稳定于热和光，具有大的介电各向异性和大的光学各向异性。液晶介质具有广泛的液晶相温度范围，大的光学各向异性和大的介电各向异性，并表现出光学各向同性液晶相。液晶化合物具有4或5个苯环，其中一个是氯氟苯环。液晶介质以含有手性掺杂剂的液晶化合物为特征，并表现出光学各向同性液晶相。
• Chlorofluorobenzene compound, optically isotropic liquid crystal medium and optical device
  申请人：Haseba Yasuhiro

  公开号：US08586153B2

  公开（公告）日：2013-11-19

  A liquid crystal compound and a liquid crystal medium are described. The liquid crystal compound is stable to heat and light and has a large dielectric anisotropy and a large optical anisotropy. The liquid crystal medium has a wide temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase. The liquid crystal compound has 4 or 5 benzene rings, one of which is a chlorofluorobenzene ring. The liquid crystal medium is characterized in containing the liquid crystal compound and a chiral dopant and exhibiting an optically isotropic liquid crystal phase.

  本文描述了一种液晶化合物和液晶介质。液晶化合物在热和光的作用下稳定，并具有大的介电各向异性和大的光学各向异性。液晶介质具有广泛的液晶相温度范围，大的光学各向异性和大的介电各向异性，并表现出光学各向同性液晶相。液晶化合物具有4或5个苯环，其中一个是氯氟苯环。液晶介质的特点在于含有液晶化合物和手性掺杂剂，并表现出光学各向同性液晶相。
• CHLOROFLUOROBENZENE COMPOUND, OPTICALLY ISOTROPIC LIQUID CRYSTAL MEDIUM AND OPTICAL DEVICE
  申请人：HASEBA YASUHIRO

  公开号：US20130085306A1

  公开（公告）日：2013-04-04

  A liquid crystal compound and a liquid crystal medium are described. The liquid crystal compound is stable to heat and light and has a large dielectric anisotropy and a large optical anisotropy. The liquid crystal medium has a wide temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase. The liquid crystal compound has 4 or 5 benzene rings, one of which is a chlorofluorobenzene ring. The liquid crystal medium is characterized in containing the liquid crystal compound and a chiral dopant and exhibiting an optically isotropic liquid crystal phase.

  描述了一种液晶化合物和液晶介质。该液晶化合物稳定于热和光，并具有较大的介电各向异性和光学各向异性。该液晶介质具有广泛的液晶相温度范围，较大的光学各向异性和介电各向异性，并表现出光学各向同性的液晶相。该液晶化合物有4或5个苯环，其中一个是氯氟苯环。该液晶介质的特征在于含有液晶化合物和手性掺杂剂，并表现出光学各向同性的液晶相。