((2,5-dimethylphenyl)methylene)dibenzene | 7249-83-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 三苯基化合物
• 英文名称: ((2,5-dimethylphenyl)methylene)dibenzene
• 英文别名: 2-(Diphenylmethyl)-1,4-dimethylbenzene；2-benzhydryl-1,4-dimethylbenzene
• CAS: 7249-83-4
• 化学式: C₂₁H₂₀
• 分子量: 272.39
• InChiKey: ZBGWWTXKHFXXRT-UHFFFAOYSA-N

物化性质

• 熔点：
  91 °C
• 沸点：
  384.7±37.0 °C(Predicted)
• 密度：
  1.026±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 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：

  ((2,5-dimethylphenyl)methylene)dibenzene 在 potassium dichromate 、 alkaline potassium permanganate 、 硫酸 作用下， 生成 1-oxo-3,3-diphenyl-phthalan-5-carboxylic acid
  参考文献：
  名称：

  Hemilian, Chemische Berichte, 1883, vol. 16, p. 2361

  摘要：

  DOI：
• 作为产物：
  描述：

  2,5-二甲基二苯甲酮 在 乙醚 、 溶剂黄146 、 锌 作用下， 生成 ((2,5-dimethylphenyl)methylene)dibenzene
  参考文献：
  名称：

  A Landscape Guide in Environmental Education

  摘要：

  The interpretation of landscapes is an important way to learn about geography in environmental education. A Landscape Guide to the Bachelor Reserve applies geographic/historical and biological/ecological perspectives to the interpretation of ten landscape scenes along a three-mile walking tour. For each scene, the guide describes the environmental setting, the composition and structure of the vegetation, and the history of human influences. Questionnaire and field assessments document a well-received interpretive tool, and the need to guide participants across land transitions and interpret land use history clearly. Landscape guides can he used in school/community land labs and contribute to holistic learning and multidisciplinary exercises in formal and informal environmental education programs.

  DOI：

  10.1080/00221340108978419

文献信息

• Unmodified Fe3O4 nanostructure promoted with external magnetic field: safe, magnetically recoverable, and efficient nanocatalyst for N- and C-alkylation reactions in green conditions
  作者：Ezzat Rafiee、Mohammad Joshaghani、Parvaneh Ghaderi-Shekhi Abadi

  DOI：10.1007/s11164-017-3243-6

  日期：2018.4

  high catalytic activity and stability in N- and C-alkylation reactions. A diverse range of N- and C-alkylation products were obtained in moderate to high yield under green and mild conditions in air. Also the N- and C-alkylation products can be obtained with different selectivity and yield by exposure reactions with EMF. Results of alkylation reactions showed that the presence of Fe(II) and Fe(III)

  过渡金属化合物已作为有机反应的合适催化剂出现。磁性化合物如柔软的路易斯酸可用作有机反应的催化剂。在该报告中，在没有任何保护剂的外部磁场（EMF）下，从Fe 2+和Fe 3+盐获得了Fe 3 O 4纳米结构。X射线光电子能谱，扫描电子显微镜和能量色散X射线能谱工具用于表征这些磁性化合物。二维（二维，它在二维中显示纳米尺寸，纳米棒结构）Fe 3 O 4该化合物在N和C烷基化反应中显示出高催化活性和稳定性。在绿色和温和的条件下，在空气中以中等至高收率获得了各种N-和C-烷基化产物。通过与EMF的暴露反应，也可以以不同的选择性和产率获得N-和C-烷基化产物。烷基化反应的结果表明，磁性催化剂表面（磁性化合物的相结构）上存在Fe（II）和Fe（III）物种是非常廉价的活性位点所必需的。而且，磁性催化剂的形态对其催化性能有影响。反应后，使用外部磁体可以轻松实现催化剂/产物的分离，并且可以回收超过95％的催化剂。
• SO3H-functionalized organic-inorganic ionic liquids based on polyoxometalates characterization and their application in C C coupling reaction
  作者：Ezzat Rafiee、Fakhrosadat Mirnezami、Masoud Kahrizi

  DOI：10.1016/j.molstruc.2016.04.098

  日期：2016.9

  Different ionic liquids (ILs) with SO 3 H as functional group were achieved by combining SO 3 H-functionalized organic cations and polyoxometalates (POM). The obtained salts were characterized and their catalytic activities investigated in C C coupling between benzhydrol and aromatic compounds at neat conditions, including the effect of organic cations, influence of POMs, optimization of reaction conditions

  摘要 通过将SO 3 H 官能化的有机阳离子和多金属氧酸盐(POM) 结合，制备了以SO 3 H 为官能团的不同离子液体(ILs)。对所得盐进行表征，并研究了它们在纯条件下二苯甲醇和芳香族化合物的 CC 偶联中的催化活性，包括有机阳离子的影响、POM 的影响、反应条件的优化和催化剂的可重复使用性。此外，至少四次研究了离子液体作为非均相催化剂的回收率、可重复使用性和活性。
• Superacid BF₃–H₂O promoted benzylation of arenes with benzyl alcohols and acetates initiated by trace water
  作者：Shuting Zhang、Xiaohui Zhang、Xuege Ling、Chao He、Ruofeng Huang、Jing Pan、Jiaqiang Li、Yan Xiong

  DOI：10.1039/c4ra04059g

  日期：——

  An efficient in situ prepared superacid BF₃–H₂O promoted benzylation of arenes using benzyl alcohols and acetates achieves various diarylalkanes.

  一种高效的原位制备的超强酸BF3-H2O促进的芳烃苄基化反应，使用苄醇和醋酸酯制备各种二芳基烷烃。
• Nanostructured molybdenum oxides and their catalytic performance in the alkylation of arenes
  作者：Feng Wang、Wataru Ueda

  DOI：10.1039/b803205j

  日期：——

  We report for the first time that nanostructured MoO3 is an excellent catalyst for the alkylation of a wide range of arenes with substituted benzyl alcohols as alkylating agents.

  我们首次报道，纳米结构的三氧化钼是一种出色的催化剂，用于范围广泛的芳烃与取代苄醇类作为烷基化剂的烷基化反应。
• Benzylation of arenes with benzyl ethers promoted by the in situ prepared superacid BF3–H2O
  作者：Yu Li、Yan Xiong、Xueming Li、Xuege Ling、Ruofeng Huang、Xiaohui Zhang、Jianchun Yang

  DOI：10.1039/c4gc00005f

  日期：——

  An efficient and environmentally friendly benzylation of arenes with benzyl ethers as benzyl donors using BF3–Et2O to generate in situ the superacid BF3–H2O as an efficient promotor has been described. A wide variety of functional groups have been investigated and found to be compatible to give the desired diarylmethanes in yields of up to 99%. The crucial role of the moisture content in this transformation has been demonstrated by detailed investigations.

  一种高效且环保的芳烃苄基化反应，采用苄基醚作为苄基供体，并使用BF3–Et2O原位生成超酸BF3–H2O作为高效促进剂。研究发现多种功能团具有良好的兼容性，能够获得最高达99%的期望二芳基甲烷产率。通过详细的研究，证明了水分含量在这一转化过程中的关键作用。