2,3-Difluoro-ethoxybenzene

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 2,3-Difluoro-ethoxybenzene
• 英文别名: 1,2-Bis(1-fluoroethoxy)benzene
• 化学式: C₁₀H₁₂F₂O₂
• 分子量: 202.201
• InChiKey: TVIWRQAIHPSVQF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2,3-Difluoro-ethoxybenzene 、 仲丁基锂 以 四氢呋喃 、 正己烷 为溶剂， 生成 2,3-difluoro-4-ethoxyphenyl lithium
  参考文献：
  名称：

  Liquid crystal compound having negative dielectric anisotropy, liquid crystal composition containing said liquid crystal compound and liquid crystal display device using said composition

  摘要：

  公开号：

  EP0982386B1
• 作为产物：
  描述：

  2,3-difluoro-6-chloro-ethoxybenzene 生成 2,3-Difluoro-ethoxybenzene
  参考文献：
  名称：

  Process for the dechlorination and/or debromination of fluorine-and

  摘要：

  含氟、氯和/或溴的芳香化合物可以通过氢气在工业上优越和选择性的方式下脱氯和/或脱溴，如果钯催化剂存在于固定相中，而芳香化合物存在于气相中。

  公开号：

  US05283378A1

文献信息

• Liquid crystalline compound, liquid crystal composition comprising the liquid crystal-line compound, and liquid crystal display device using the liquid crystal composition
  申请人：Chisso Corporation

  公开号：US06319570B1

  公开（公告）日：2001-11-20

  The invention is to provide liquid crystalline compounds which have a low viscosity, high negative dielectric anisotropy, high resistivity, and high voltage holding ratio, and are stable against heat and ultraviolet light; to provide liquid crystal compositions comprising the liquid crystalline compound; and to provide liquid crystal display devices using the liquid crystal composition therein; the liquid crystalline compound is expressed by the general formula (1)  wherein R1 and Y1 represent an alkyl group having 1 to 20 carbon atoms; X1, X2, and X3 independently represent single bond, 1,2-ethylene group, vinylene group, —COO—, —CF2O—, or —OCF2—; ring A1, ring A2, ring A3, and ring A4 independently represent trans-1,4-cycloliexylene, or 1,4-phenylene hydrogen atom on the ring may be replaced by fluorine atom or chlorine atom provided that at least one of ring A2, ring A3, and ring A4 represents 2,3-difluoro-1,4-phenylene; m and n are 0 or 1, and each element which constitutes this compound may be replaced by its isotope.

  该发明旨在提供具有低粘度、高负介电各向异性、高电阻率和高耐热、耐紫外光性能的液晶化合物；提供包括该液晶化合物的液晶组合物；提供使用该液晶组合物的液晶显示器件。该液晶化合物由通式（1）表示，其中R1和Y1代表具有1至20个碳原子的烷基基团；X1、X2和X3独立表示单键、1,2-乙烯基、乙烯基、—COO—、—CF2O—或—OCF2—；环A1、环A2、环A3和环A4独立表示反式-1,4-环己二烯基或1,4-苯基，环上的氢原子可以被氟原子或氯原子取代，前提是环A2、环A3和环A4中至少有一个代表2,3-二氟-1,4-苯基；m和n为0或1，构成该化合物的每个元素都可以被其同位素取代。
• LIQUID CRYSTALLINE COMPOUND HAVING PIPERIDINE RING, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT
  申请人：CHISSO CORPORATION

  公开号：EP1072593A1

  公开（公告）日：2001-01-31

  The present invention relates to a novel liquid crystalline compound represented by Formula (1): wherein R represents an alkyl group having 1 to 10 carbon atoms or a fluoroalkyl group having 1 to 10 carbon atoms, and R' represents an alkyl group having 1 to 10 carbon atoms, a fluoroalkyl group having 1 to 10 carbon atoms, a fluorine atom, a chlorine atom, a bromine atom or a cyano group, in which any methylene groups which are not adjacent to each other in these alkyl groups and any methylene groups and/or fluoromethylene groups which are not adjacent to each other in the fluoroalkyl groups may be substituted with oxygen atoms, sulfur atoms or -CH=CH-; the rings A1, A2, A3 and A4 each independently represent 1,4-cyclohexylene, 1,4-phenylene in which 1 to 2 hydrogen atoms may be substituted with fluorine atoms, dioxane-2,5-diyl, pyrimidine-2,5-diyl, pyridine-2,5-diyl, piperidine-1,4-diyl or 1-sila-1,4-cyclohexylene; B1, B2, B3, B4 and B5 each independently represent a single bond, -CH2CH2-, -CH=CH-, -OCH2-, -CH2O-, -(CH2)4-, -OCO- or -COO-; l, m, n and p each independently represent 0 or 1; and Z represents one group selected from the following moieties (I) to (V): provided that when Z is the moiety (II), l + m + n + p > 0, and the rings A1, A2, A3 and A4 each independently represent 1,4-phenylene in which 1 to 2 hydrogen atoms are substituted with fluorine atoms, pyrimidine-2,5-diyl, pyridine-2,5-diyl, piperidine-1,4-diyl or 1-sila-1,4-cyclohexylene; and that when Z is the moiety (III) and l = m = n = p = 0, R is an alkyl group, and R' is not a fluorine atom or a cyano group when B5 is a single bond. The present invention further relates to a liquid crystal composition comprising the above compound and a liquid crystal display element comprising the above composition. The liquid crystalline compound of the present invention has a particularly large dielectric anisotropy and refractive anisotropy and a low viscosity and is excellent in a low temperature compatibility.

  本发明涉及一种新颖的液晶化合物，其表示为式（1）所示：其中R代表具有1至10个碳原子的烷基基团或具有1至10个碳原子的氟烷基基团，R'代表具有1至10个碳原子的烷基基团、具有1至10个碳原子的氟烷基基团、氟原子、氯原子、溴原子或氰基，在这些烷基基团中不相邻的任何亚甲基基团和不相邻的亚甲基和/或氟亚甲基基团可以用氧原子、硫原子或-CH=CH-取代；环A1、A2、A3和A4分别独立地表示1,4-环己亚甲基、1,4-苯基，其中1至2个氢原子可以用氟原子取代，二氧杂环戊二亚基、嘧啶-2,5-二亚基、吡啶-2,5-二亚基、哌啶-1,4-二亚基或1-硅-1,4-环己亚甲基；B1、B2、B3、B4和B5分别独立地表示单键、-CH2CH2-、-CH=CH-、-OCH2-、-CH2O-、-(CH2)4-、-OCO-或-COO-；l、m、n和p各自独立地表示0或1；Z表示从以下基团（I）到（V）中选择的一个基团：但是当Z为基团（II）时，l + m + n + p > 0，环A1、A2、A3和A4分别独立地表示1,4-苯基，其中1至2个氢原子被氟原子取代，嘧啶-2,5-二亚基、吡啶-2,5-二亚基、哌啶-1,4-二亚基或1-硅-1,4-环己亚甲基；当Z为基团（III）且l = m = n = p = 0时，R为烷基基团，当B5为单键时，R'不是氟原子或氰基。本发明还涉及包括上述化合物的液晶组合物和包括上述组合物的液晶显示元件。本发明的液晶化合物具有特别大的介电各向异性和折射各向异性，低粘度，并且在低温兼容性方面表现出色。
• LIQUID-CRYSTALLINE COMPOUNDS HAVING BICYCLO 1.1.1]PENTANE STRUCTURE, LIQUID-CRYSTAL COMPOSITION, AND LIQUID-CRYSTAL DISPLAY ELEMENT
  申请人：CHISSO CORPORATION

  公开号：EP0987238A1

  公开（公告）日：2000-03-22

  An object of the present invention is to provide novel liquid crystalline compounds which have bicyclo[1.1.1]pentane structure and make liquid crystal compositions principally for TFT display mode, STN display mode, or TN display mode develop preferable various physical properties, particularly liquid crystalline compounds from which liquid crystal compositions by which driving at a low voltage and a high speed response are possible and which have a high reliability can be produced; to provide liquid crystal compositions comprising the compound; and to provide liquid crystal display devices fabricated by using the composition: the liquid crystalline compounds can be expressed by the general formula (1) wherein R1, A0 to A3, Z0 to Z3, X, ℓ, m, n, and 0 are defined hereinbefore.

  本发明的一个目的是提供具有双环[1.1.1]戊烷结构的新型液晶化合物，用于制备主要用于TFT显示模式、STN显示模式或TN显示模式的液晶组合物，开发出各种理想的物理性质，特别是可以通过这些液晶化合物制备出驱动电压低且响应速度快、具有高可靠性的液晶组合物；提供包含该化合物的液晶组合物；以及提供通过使用该组合物制造的液晶显示装置：液晶化合物可以用通用公式（1）表示，其中R1、A0至A3、Z0至Z3、X、ℓ、m、n和o如前所述定义。
• Hexahydrodibenzofuran derivatives
  申请人：Jansen Axel

  公开号：US20070247585A1

  公开（公告）日：2007-10-25

  Disclosed are hexahydrodibenzofuran compounds of formula I, the preparation thereof, the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain the liquid-crystalline media according to the invention.

  本发明公开了式I的六氢二苯并呋喃化合物及其制备方法，其用作液晶介质组分，以及包含根据本发明的液晶介质的电光显示元件。
• LIQUID CRYSTAL COMPOUNDS, LIQUID CRYSTAL COMPOSITIONS CONTAINING THE COMPOUNDS, AND LIQUID CRYSTAL DISPLAY DEVICES MADE BY USING THE COMPOSITIONS
  申请人：CHISSO CORPORATION

  公开号：EP0916639A1

  公开（公告）日：1999-05-19

  The invention is to provide liquid crystalline compounds which have a low viscosity, high negative dielectric anisotropy, high resistivity, and high voltage holding ratio, and are stable against heat and ultraviolet light; to provide liquid crystal compositions comprising the liquid crystalline compound; and to provide liquid crystal display devices using the liquid crystal composition therein; the liquid crystalline compound is expressed by the general formula (1) wherein R1 and Y1 represent an alkyl group having 1 to 20 carbon atoms; X1, X2, and X3 independently represent single bond, 1,2-ethylene group, vinylene group, -COO-, -CF2O-, or -OCF2-; ring A1, ring A2, ring A3, and ring A4 independently represent trans-1,4-cyclohexylene, or 1,4-phenylene hydrogen atom on the ring may be replaced by fluorine atom or chlorine atom provided that at least one of ring A2, ring A3, and ring A4 represents 2,3-difluoro-1,4-phenylene; m and n are 0 or 1, and each element which constitutes this compound may be replaced by its isotope.

  本发明旨在提供具有低粘度、高负介电各向异性、高电阻率和高电压保持比，并且对热和紫外线稳定的液晶化合物；提供包含该液晶化合物的液晶组合物；以及提供使用该液晶组合物的液晶显示设备； 所述液晶化合物由通式（1）表示 其中 R1 和 Y1 代表具有 1 至 20 个碳原子的烷基；X1、X2 和 X3 独立地代表单键、1,2-乙烯基、乙烯基、-COO-、-CF2O- 或 -OCF2-；环 A1、环 A2、环 A3 和环 A4 独立地代表反式-1,4-环己烯或 1,4-亚苯基，环上的氢原子可被氟原子或氯原子取代，条件是环 A2、环 A3 和环 A4 中至少有一个代表 2,3-二氟-1,4-亚苯基；m 和 n 为 0 或 1，构成该化合物的每个元素可被其同位素取代。