9-benzhydrylidene-9,10-dihydro-anthracene | 67856-21-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 蒽
• 英文名称: 9-benzhydrylidene-9,10-dihydro-anthracene
• 英文别名: 9-Benzhydryliden-9,10-dihydro-anthracen；9-Diphenylmethylen-9,10-dihydroanthracen；10-benzhydrylidene-9H-anthracene
• CAS: 67856-21-7
• 化学式: C₂₇H₂₀
• 分子量: 344.456
• InChiKey: SLTKMKIOHVGCSE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.6
• 重原子数：
  27.0
• 可旋转键数：
  2.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.04
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  9-benzhydrylidene-9,10-dihydro-anthracene 在 二氧化硫 作用下， 生成 9-benzhydrylanthracene
  参考文献：
  名称：

  Nojima,M. et al., Journal of the Chemical Society. Perkin transactions I, 1978, p. 488 - 495

  摘要：

  DOI：
• 作为产物：
  描述：

  α-(9,10-dihydro-9-anthryl)benzhydrol 在 甲酸 作用下， 生成 9-benzhydrylidene-9,10-dihydro-anthracene
  参考文献：
  名称：

  Exploiting the short-term and long-term channel properties in space and time: Eigenbeamforming concepts for the BS in WCDMA

  摘要：

  AbstractThe deployment of adaptive antennas at base stations considerably increases the spectral efficiency of wireless communication systems. To reduce the computational complexity and increase performance of space—time (ST) processing, processing may take place in reduced dimension, i. e., pre—filtering takes place which is related to linear estimation theory based on second order statistics. To this end, long—term and short—term channel estimates are integrated into specific Tx/Rx systems. In this article, we present a new ST rake structure for uplink reception in WCDMA which operates in reduced dimension. Accordingly, our approach combines short—term and long—term spatial and temporal channel properties using an eigenanalysis. By choosing dominant eigenbeams in time and space, the algorithm enhances interference suppression as well as spatial and temporal receive diversity. In contrast to previously introduced well—known receiver structures, the ST eigenrake inherently adapts to different propagation environments and achieves higher spectral efficiency than other receivers. This is illustrated by Monte—Carlo simulations.Then we extend the proposed concept to the downlink. The downlink eigenbeamformer improves closed—loop downlink diversity compared to other proposals in standardization (3GPP) which only exploit short—term channel properties. Even though the short—term feedback rate remains unchanged, additional antenna elements can be included to increase antenna and diversity gain. We also present a tracking solution to the downlink eigenbeamforming in WCDMA. To this end, we propose a distributed implementation of the eigenspace/—beam tracking at the mobile terminal and base station (BS), respectively. Moreover, the specific nature of the deployed tracking scheme offers an advantageous feedback signalling.

  DOI：

  10.1002/ett.4460120503

文献信息

• Novel reactivity of (9-anthryl)diphenylmethyl hexachioroantimonate and related compounds with nucleophiles at the ring position
  作者：Masato Takagi、Masatomo Nojima、Shigekazu Kusabayashi

  DOI：10.1039/p19790002941

  日期：——

  (9-anthryl)diphenylmethyl hexachloroantimonate (1) with nucleophiles gave mainly the quinoidal products by attack on the 10-position of the anthracene ring, suggesting the existence of a strong interaction of the two phenyl rings with the hydrogens at the 1- and 8-positions of the anthracene ring. Compound (1) is propellorshaped, and thus approach by the nucleophile to the benzylic site is difficult. For the reactions

  （9-蒽基）二苯基甲基六氯锑酸酯（1）与亲核试剂的反应主要是通过攻击蒽环的10位而得到的醌类产物，表明两个苯环与1处的氢存在强相互作用。 -和蒽环的8位。化合物（1）是螺旋桨形的，因此亲核试剂难以接近苄基位点。对于9-二苯基亚甲基-10-氯-9，10-二氢蒽的反应，获得的数据表明亲核试剂接近蒽环的10位的方法比（1）的情况更受阻碍。通过用苯基取代（1）的10-氢，观察到亲核试剂在位置10上的进攻显着延迟。
• Reactions of (9-anthryl)arylmethyl chloride and its homologs with nucleophiles under solvolytic conditions. Notable effects of reaction conditions and substituents on the reaction sites
  作者：Fujimaro Ogata、Masato Takagi、Masatomo Nojima、Shigekazu Kusabayashi

  DOI：10.1021/ja00395a025

  日期：1981.3
• Additions to Conjugated Systems in the Anthracene Series. III. Factors Influencing the Mode and Extent of Reaction of the Grignard Reagent with Ketones
  作者：Percy L. Julian、Wayne Cole、Thomas F. Wood

  DOI：10.1021/ja01315a056

  日期：1935.12
• OGATA FUJIMARO; TAKAJI MASATO; NOJIMA MASATOMO; KUSABAYASHI SHIGEKAZU, J. AMER. CHEM. SOC., 1981, 103, NO 5, 1145-1153
  作者：OGATA FUJIMARO、 TAKAJI MASATO、 NOJIMA MASATOMO、 KUSABAYASHI SHIGEKAZU

  DOI：——

  日期：——