[4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]-boronic acid | 148455-06-5

• 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-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]-boronic acid
• 英文别名: 4-(tert-butyldiphenylsilyloxy)phenylboronic acid；[4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]phenyl]-boronic acid；[4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]phenyl]boronic acid；4-tert-butyldiphenylsilyloxybenzeneboronic acid；4-tert-butyldiphenylsilyloxyphenylboronic acid；[4-[tert-butyl(diphenyl)silyl]oxyphenyl]boronic acid
• CAS: 148455-06-5
• 化学式: C₂₂H₂₅BO₃Si
• 分子量: 376.335
• InChiKey: QTCSFMKFNGGRGG-UHFFFAOYSA-N

物化性质

• 沸点：
  473.4±51.0 °C(Predicted)
• 密度：
  1.12±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.31
• 重原子数：
  27
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  49.7
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  [4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]-boronic acid 生成 5-bromo-2-(4-tert-butyldiphenylsilyloxyphenyl)-3-fluoropyridine
  参考文献：
  名称：

  3-fluoropyridines, process for their preparation, and their use in

  摘要：

  化学式（I）中的3-氟吡啶，其中符号的含义如下：R1和R2，彼此独立，例如为H或直链或支链烷基，A1、A2、A3和A4相同或不同，例如为1,4-苯基、吡嗪-2,5-二基或反-1,4-环己基，M1、M2、M3和M4相同或不同，例如为--O--或--CO--O--，R3、R4、R6和R7，彼此独立，例如为H或直链或支链烷基，M5例如为--O--CO--或单键，k、l、m、n、o、p、q和r为零或一，但要求k+m+p+r之和小于4且大于零，可作为铁电液晶混合物中的组分。

  公开号：

  US05445763A1
• 作为产物：
  描述：

  (4-溴苯氧基)(2-甲基-2-丙基)二苯基硅烷 生成 [4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]-boronic acid
  参考文献：
  名称：

  3-Chloropyridines, and their use in liquid-crystal mixtures

  摘要：

  3-氯吡啶，其制备方法以及它们在液晶混合物中的应用。式（I）的3-氯吡啶：##STR1## 其中符号具有以下含义：R.sup.1和R.sup.2，彼此独立，例如，为H或直链或支链烷基，A.sup.1，A.sup.2，A.sup.3和A.sup.4相同或不同，例如，为1,4-苯撑基，吡嗪-2,5-二基或反-1,4-环己撑基，M.sup.1，M.sup.2，M.sup.3和M.sup.4相同或不同，例如，为--O--或--CO--O--，R.sup.3，R.sup.4，R.sup.6和R.sup.7彼此独立，例如，为H或直链或支链烷基，M.sup.5例如，为--O--CO--或单键，k，l，m，n，o，p，q和r为零或一，但须满足k+m+p+r的总和小于4且大于零，可优选作为铁电液晶混合物中的组分。

  公开号：

  US05629428A1

文献信息

• 2-fluoropyrazines process for their preparation, and their use in
  申请人：Hoechst Aktiengesellschaft

  公开号：US05562859A1

  公开（公告）日：1996-10-08

  2-Fluoropyrazines, process for their preparation, and their use in liquid-crystalline mixtures A 2-fluoropyrazine of the formula (I) ##STR1## in which the symbols have the following meanings: R.sup.1 and R.sup.2, independently of one another, are, for example, H or straight-chain or branched alkyl, A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are identical or different and are, for example, 1,4-phenylene or M.sup.1, M.sup.2, M.sup.3 and M.sup.4 are identical or different and are, for example, --0-- or --CO--O--, R.sup.3, R.sup.4, R.sup.6 and R.sup.7, independently of one another, are, for example, H or straight-chain or branched alkyl, M.sup.5 is, for example, --O--CO-- or a single bond, k, l, m, n, o, p, q and r are zero or one, with the condition that the sum of k+m+p+r is less than 4 and greater than zero, can advantageously be employed as a component in liquid-crystal mixtures.

  2-氟吡嗪的制备方法及其在液晶混合物中的应用 具有公式(I)的2-氟吡嗪 其中符号具有以下含义：R1和R2，彼此独立，例如，是H或直链或支链烷基，A1，A2，A3和A4相同或不同，例如，是1,4-苯基或M1，M2，M3和M4相同或不同，例如，是--O--或--CO--O--，R3，R4，R6和R7，彼此独立，例如，是H或直链或支链烷基，M5例如是--O--CO--或单一键，k，l，m，n，o，p，q和r是零或一，条件是k+m+p+r之和小於4且大於零，可用作液晶混合物的组分。
• Designing banana-shaped liquid crystals without Schiff's base units: m-terphenyls, 2,6-diphenylpyridines and V-shaped tolane derivatives
  作者：Dong Shen、Siegmar Diele、Gerhard Pelzl、Ina Wirth、Carsten Tschierske

  DOI：10.1039/a808275h

  日期：——

  This paper reports attempts to obtain (anti)ferroelectric switchable achiral banana-shaped molecules without Schiff's base units. For this purpose we have synthesized novel V-shaped molecules consisting of rigid angular central units [1,3-disubstituted benzene, 2,7-disubstituted naphthalene, 1,3-diphenylbenzene, 2,6-diphenylnitrobenzene, 2,6-diphenylpyridine, 1,3-bis(phenylethynyl)benzene, 1-phenyl-3-(phenylethynyl)benzene] connected via ester linkages to two rigid cores (1,4-disubstituted benzenes, biphenyls, 2-phenylpyrimidines, phenylbenzoates). Most compounds have rather high melting points. Only molecules with seven aromatic rings show liquid crystalline properties. Two-dimensional modulated smectic phases (rectangular columnar phases) were found for molecules with phenylbenzoate rigid units. Intercalated fluid smectic phases were detected for the corresponding 2-phenylpyrimidine derivatives. For the first time in the case of banana-shaped molecules a nematic phase was observed for a 2′-nitro-m-terphenyl-4,4″-diyl bisbenzoate. However, none of the synthesized compounds exhibit the typical texture of the (anti)ferroelectric switchable mesophases, known from the Schiff's base derivatives.

  这篇论文报告了在没有施夫碱单元的情况下，获得可切换的反铁电和铁电非手性香蕉形状分子的尝试。为此，我们合成了新型的V形分子，这些分子由刚性角形中心单元（1,3-二取代苯、2,7-二取代萘、1,3-二苯基苯、2,6-二苯基硝基苯、2,6-二苯基吡啶、1,3-双（苯乙炔）苯、1-苯基-3-（苯乙炔）苯）通过酯连接物连接至两个刚性核心（1,4-二取代苯、联苯、2-苯基吡啶、苯基苯甲酸酯）。大多数化合物的熔点相当高。只有七个芳香环的分子显示出液晶特性。具有苯基苯甲酸酯刚性单元的分子观察到二维调制的层状相（矩形柱状相）。相应的2-苯基吡啶衍生物检测到了夹层流体层状相。在香蕉形状分子的情况下，首次观察到2′-硝基-m-三苯基-4,4″-二苯甲酸酯的涡旋相。然而，合成的化合物中没有任何显示出施夫碱衍生物所知的典型（反）铁电可切换介相的纹理。
• Liquid crystalline paracyclophanes and ansa compounds—series of polyether macrocycles incorporating diacetylene, phenyl, biphenyl, p-terphenyl and 2,5-diphenyl-1,3,4-thiadiazole rigid cores
  作者：Torsten Hegmann、Bernhard Neumann、Raik Wolf、Carsten Tschierske

  DOI：10.1039/b416091f

  日期：——

  Series of different macrocyclic liquid crystals consisting of two rod-like aromatic cores connected at both terminal ends by polyether chains have been synthesised by various macrocyclisation reactions (template assisted etherification, Yamaguchi macrolactonisation, Glaser-coupling reaction). The nature and length of the rigid core have a dominant impact on the liquid crystalline phases formed. A stepwise increase of the length of one of the rigid cores leads to significant mesophase stabilisation, to the induction of lamellar phases and, in general, to wider mesophase ranges. The same types of mesophases but at much reduced transition temperatures are observed when flexible methylene linkages are incorporated into the macrocycles. Parallel pre-organisation of the calamitic cores and micro-segregation of chemically distinct molecular parts are discussed as the main driving forces for the mesophase behaviour of these macrocyclic compounds. Additionally, chiral macrocyclic liquid crystals exhibiting SmC* phases, cholesteric phases and blue phases have been synthesised. In contrast to the cyclophanes, ansa-compounds incorporating only one aromatic core within the macrocycle show either a monotropic nematic phase only or no liquid crystalline behaviour at all. An architecture combining the cyclophane structure with an ansa-unit and a molecule with a non-parallel pre-organisation of rod-like mesogenic cores as well does not show LC phases. The lack of LC behaviour for these compounds might be due to the molecular architecture resulting in a steric disturbance of packing that, in this way, does not allow for segregation of rigid and flexible units into distinct sub-domains.

  由两个棒状芳香核通过聚醚链在两端连接而成的一系列不同的宏环液晶已通过各种宏环化反应合成（模板辅助醚化、山口巨环化反应、格拉泽偶联反应）。刚性核心的性质和长度对形成的液晶相具有显著影响。逐步增加其中一个刚性核心的长度会显著稳定中间相，诱导出层状相，并且总体上扩大了中间相的范围。当将柔性亚甲基链接体引入宏环时，观察到相同类型的中间相，但其相变温度明显降低。讨论了直链核心的平行预先组织和化学不同分子部分的微相分离作为这些宏环化合物中间相行为的主要驱动力。此外，还合成了表现出SmC*相、胆甾相和蓝相的手性宏环液晶。不同于环芳烃，仅在宏环内部包含一个芳香核心的安萨化合物仅显示出单调的向列相或根本没有液晶行为。结合环芳烃结构与安萨单位的架构以及不平行预先组织的棒状介导核心的分子也未显示出液晶相。这些化合物缺乏液晶行为可能是由于分子架构导致的堆积立体障碍，从而不允许刚性和柔性单位分离成不同的子域。
• Biphenyls as surrogates of the steroidal backbone. Part 1: synthesis and estrogen receptor affinity of an original series of polysubstituted biphenyls
  作者：Dominique Lesuisse、Eva Albert、Françoise Bouchoux、E Cérède、Jean-Michel Lefrançois、Marc-Olivier Levif、Sophie Tessier、Bernadette Tric、Georges Teutsch

  DOI：10.1016/s0960-894x(01)00267-0

  日期：2001.7

  In the course of a programme aimed at discovering new ligands of the estrogen receptor, we explored a series of substituted biphenyls. Their synthesis and binding affinity are described.

  在旨在发现雌激素受体新配体的程序中，我们探索了一系列取代的联苯。描述了它们的合成和结合亲和力。
• Biphenyl compounds and their use as oestrogenic agents
  申请人：Aventis Pharma S.A.

  公开号：US06365775B1

  公开（公告）日：2002-04-02

  Compounds of formula (I), wherein [X] represents aromatic carbocyclic rings (A) and (B), where R1, R2, R3, R4, R5, R6 and R7 are as defined in the description, salts thereof, a method and intermediates for preparing same, the use thereof as drugs, and pharmaceutical compositions containing same, are disclosed.

  公式（I）的化合物中，其中[X]代表芳香碳环(A)和(B)，其中R1、R2、R3、R4、R5、R6和R7如描述中所定义，其盐，制备方法和中间体，其作为药物的用途，以及含有其的药物组合物，均已披露。