1,4-Bis(4-bromophenyl)-2,3,5,6-tetramethylbenzene | 1414142-16-7

• 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: 1,4-Bis(4-bromophenyl)-2,3,5,6-tetramethylbenzene
• 英文别名: 1,4-bis(4-bromophenyl)-2,3,5,6-tetramethylbenzene
• CAS: 1414142-16-7
• 化学式: C₂₂H₂₀Br₂
• 分子量: 444.209
• InChiKey: GXGVSPXACZTWRS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.8
• 重原子数：
  24
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  1,4-Bis(4-bromophenyl)-2,3,5,6-tetramethylbenzene 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 101.0h， 生成 (2,4,6-trimethylphenyl)B(C₆H₄)₂(p-C₆H₄)(p-C₆Me₄)(pC6H4)B(C₆H₄)₂(2,4,6-trimethylphenyl)
  参考文献：
  名称：

  Influence of the Bridging Elements on the Optical Properties of Linked 9,10-Dihydro-9,10-diboraanthracenes

  摘要：

  Starting from the monofunctionalized 9,10-dihydro-9,10-diboraanthracene derivatives MesB(C6H4)(2)BX (X = H, Br), the bridged systems MesB(C6H4)(2)B-L-B(C6H4)(2)BMes have been synthesized with L = -C(H)=C(H)(p-C6Me4)C(H)=C(H)- (5), -C C(p-C6Me4)C C- (6), and -(p-C6H4)(p-C6Me4)(p-C6H4)- (7). The compounds were characterized by NMR, IR, UV/vis, and fluorescence spectroscopy. The vinyl- and phenylboranes 5 and 7 are pale yellow solids, whereas the alkynylborane 6 possesses a bright yellow color. The emission maxima of 5-7 in toluene are lambda(max)(em) 477, 460, and 461 nm with quantum yields phi(f) of 0.02, 0.30, and 0.04, respectively. Alkynylborane 6 was found to be the least air- and moisture-sensitive of the three derivatives.

  DOI：

  10.1021/om300990z
• 作为产物：
  描述：

  1,4-二碘-2,3,5,6-四甲基苯 、 4-溴苯硼酸 在 四(三苯基膦)钯 、 potassium carbonate 作用下， 以 甲苯 为溶剂， 反应 24.0h， 生成 1,4-Bis(4-bromophenyl)-2,3,5,6-tetramethylbenzene
  参考文献：
  名称：

  Influence of the Bridging Elements on the Optical Properties of Linked 9,10-Dihydro-9,10-diboraanthracenes

  摘要：

  Starting from the monofunctionalized 9,10-dihydro-9,10-diboraanthracene derivatives MesB(C6H4)(2)BX (X = H, Br), the bridged systems MesB(C6H4)(2)B-L-B(C6H4)(2)BMes have been synthesized with L = -C(H)=C(H)(p-C6Me4)C(H)=C(H)- (5), -C C(p-C6Me4)C C- (6), and -(p-C6H4)(p-C6Me4)(p-C6H4)- (7). The compounds were characterized by NMR, IR, UV/vis, and fluorescence spectroscopy. The vinyl- and phenylboranes 5 and 7 are pale yellow solids, whereas the alkynylborane 6 possesses a bright yellow color. The emission maxima of 5-7 in toluene are lambda(max)(em) 477, 460, and 461 nm with quantum yields phi(f) of 0.02, 0.30, and 0.04, respectively. Alkynylborane 6 was found to be the least air- and moisture-sensitive of the three derivatives.

  DOI：

  10.1021/om300990z

文献信息

• DEVICES FOR HIGH-FREQUENCY TECHNOLOGY, LIQUID-CRYSTALLINE MEDIA AND COMPOUNDS
  申请人：Manabe Atsutaka

  公开号：US20120261615A1

  公开（公告）日：2012-10-18

  The present invention relates to a device for high-frequency technology, or for the microwave region and millimetre wave region of the electromagnetic spectrum, characterised in that it contains a liquid-crystal medium which consists of one or more compounds, which one or more compounds, which contain 6 to 15 five-, six- or seven-membered rings, preferably 1,4-linked phenylene rings, or in that it contains a liquid-crystal medium which itself comprises a component A, which itself consists of one or more of the said compounds, which one or more compounds, which contain 6 to 15 five-, six- or seven-membered rings, preferably 1,4-linked phenylene rings. The present invention additionally relates to compounds of the formula (I), in which the parameters have the meanings given in the text, and to the corresponding, novel liquid-crystal media, to the use and preparation thereof, and to the production and use of the devices. The devices according to the invention are particularly suitable phase shifters in the microwave and millimetre wave region, for microwave and millimetre wave array antennas and very particularly for so-called tunable “reflectarrays”.

  本发明涉及一种高频技术或电磁波谱的微波区和毫米波区的装置，其特征在于它包含一种液晶介质，该液晶介质由一个或多个化合物组成，该一个或多个化合物包含6至15个五元、六元或七元环，优选为1,4-联苯环，或者它包含一种液晶介质，该液晶介质本身包括组分A，该组分A由一个或多个上述化合物组成，该一个或多个化合物包含6至15个五元、六元或七元环，优选为1,4-联苯环。本发明还涉及公式（I）中的化合物，其中参数具有本文中给出的含义，以及相应的新型液晶介质，它们的使用和制备，以及装置的生产和使用。本发明的装置特别适用于微波和毫米波区的相移器，用于微波和毫米波阵列天线，特别是用于所谓的可调“反射阵列”。
• US9193905B2
  申请人：——

  公开号：US9193905B2

  公开（公告）日：2015-11-24
• US9540566B2
  申请人：——

  公开号：US9540566B2

  公开（公告）日：2017-01-10
• US9605204B2
  申请人：——

  公开号：US9605204B2

  公开（公告）日：2017-03-28
• Influence of the Bridging Elements on the Optical Properties of Linked 9,10-Dihydro-9,10-diboraanthracenes
  作者：Estera Januszewski、Michael Bolte、Hans-Wolfram Lerner、Matthias Wagner

  DOI：10.1021/om300990z

  日期：2012.12.10

  Starting from the monofunctionalized 9,10-dihydro-9,10-diboraanthracene derivatives MesB(C6H4)(2)BX (X = H, Br), the bridged systems MesB(C6H4)(2)B-L-B(C6H4)(2)BMes have been synthesized with L = -C(H)=C(H)(p-C6Me4)C(H)=C(H)- (5), -C C(p-C6Me4)C C- (6), and -(p-C6H4)(p-C6Me4)(p-C6H4)- (7). The compounds were characterized by NMR, IR, UV/vis, and fluorescence spectroscopy. The vinyl- and phenylboranes 5 and 7 are pale yellow solids, whereas the alkynylborane 6 possesses a bright yellow color. The emission maxima of 5-7 in toluene are lambda(max)(em) 477, 460, and 461 nm with quantum yields phi(f) of 0.02, 0.30, and 0.04, respectively. Alkynylborane 6 was found to be the least air- and moisture-sensitive of the three derivatives.