bis(4-methoxy-3,5-dimethylphenyl)methane | 16271-22-0

• 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: bis(4-methoxy-3,5-dimethylphenyl)methane
• 英文别名: 4,4'-Methylen-bis-(2,6-dimethylanisol)；2-Methoxy-5-[(4-methoxy-3,5-dimethylphenyl)methyl]-1,3-dimethylbenzene
• CAS: 16271-22-0
• 化学式: C₁₉H₂₄O₂
• 分子量: 284.398
• InChiKey: MXLYEJIBZBVCMI-UHFFFAOYSA-N

物化性质

• 沸点：
  386.6±37.0 °C(Predicted)
• 密度：
  1.008±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.2
• 重原子数：
  21
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.37
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  bis(4-methoxy-3,5-dimethylphenyl)methane 在 lithium aluminium tetrahydride 、 四氯化钛 作用下， 以 四氢呋喃 、 二硫化碳 为溶剂， 反应 1.5h， 生成 4,4'-Dimethoxy-2,2',3,3',5,5'-hexamethyldiphenylmethane
  参考文献：
  名称：

  Yamato, Takehiko; Sakaue, Naozumi; Shinoda, Naoki, Journal of the Chemical Society. Perkin transactions I, 1997, # 8, p. 1193 - 1199

  摘要：

  DOI：
• 作为产物：
  描述：

  (4-甲氧基-3,5-二甲基苯基)甲醇 在 proton exchanged montmorillonite 作用下， 以 二氯甲烷 为溶剂， 反应 8.0h， 生成 bis(4-methoxy-3,5-dimethylphenyl)methane
  参考文献：
  名称：

  Unusual transformation of 4-hydroxy/methoxybenzylic alcohols via C C ipso-substitution reaction using proton-exchanged montmorillonite as media

  摘要：

  We present here proton-exchanged montmorillonite-mediated an unusual transformation of 4-hydroxy and 4-methoxybenzylic alcohols to form symmetrical benzylic ethers and diarylmethanes under mild conditions. Nuclear magnetic resonance spectroscopy and density functional theory calculations support a plausible mechanism, which includes a distinctive aromatic C-C ipso-substitution reaction with a hydroxymethyl group as the C-based leaving group. (C) 2020 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2020.152584

文献信息

• Iodine-catalyzed disproportionation of aryl-substituted ethers under solvent-free reaction conditions
  作者：Marjan Jereb、Dejan Vražič

  DOI：10.1039/c3ob27267b

  日期：——

  iodine produced triphenylmethane and the corresponding aldehydes and ketones. The electron-donating substituents facilitated the reaction, while the electron-withdrawing groups retarded it; the difference in reactivity is not very high. Such an observation may be in favour of hydride transfer, predominantly from the less electron rich side of the ether with more stable carbocation formation. With the isotopic

  碘被证明是在无溶剂反应条件下芳基取代的醚歧化的有效催化剂。将各种取代的1,1,1'，1'-四芳基二甲基醚转化为相应的二芳基酮和二芳基甲烷衍生物。由I 2催化的4-甲氧基苯基取代的醚的转化也产生了单烷基化和二烷基化的Friedel-Crafts产品。用催化量的碘处理三苯甲基烷基和三苯甲基苄基醚三苯甲烷以及相应的醛和酮。供电子的取代基促进了反应，而吸电子基团阻止了该反应。反应性差异不是很大。这种观察可能有利于氢化物转移，主要是从醚的电子富集较少的一侧开始，具有更稳定的碳正离子形成。通过同位素研究，可以确定，大部分的C–H键断裂在速率确定步骤中发生，而羰基氧原子则起源于起始醚，而不是空气。转化是在空气和氩气下进行的，HI不是起作用的催化剂。
• Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
  申请人：CANON KABUSHIKI KAISHA

  公开号：US10031430B2

  公开（公告）日：2018-07-24

  An electrophotographic photosensitive member including a surface layer containing a specific polyester resin is provided. The polyester resin contains specific structures.

  提供了一种电致发光感光构件，包括含有特定聚酯树脂的表层。聚酯树脂含有特定结构。
• Low loss pre-pregs and laminates and compositions useful for the preparation thereof
  申请人：Arlon LLC

  公开号：US10418148B2

  公开（公告）日：2019-09-17

  In accordance with the present invention, compositions are described which are useful, for example, for the preparation of metal-clad laminate structures, methods for the preparation thereof, and various uses therefor. Invention metal-clad laminate structures are useful, for example, in the multi-layer board (MLB) industry, in the preparation of burn-in test boards and high reliability boards, in applications where low coefficient of thermal expansion (CTE) is beneficial, in the preparation of boards used in down-hole drilling, and the like.

  根据本发明，描述了用于制备金属覆层结构的组合物、制备方法及其各种用途。本发明的金属铠装层压板结构可用于多层板（MLB）行业、制备烧损测试板和高可靠性板、有利于低热膨胀系数（CTE）的应用、制备井下钻探所用的板等。
• Phosphorus-containing compound, phosphorus-containing flame retardant, preparation method thereof, and article made therefrom
  申请人：Elite Electronic Material (Kunshan) Co., Ltd

  公开号：US10676493B2

  公开（公告）日：2020-06-09

  A phosphorus-containing compound, a phosphorus-containing flame retardant, and a preparation method thereof are provided. Also provided is a resin composition which comprises the phosphorus-containing flame retardant and an unsaturated bond-containing resin. The resin composition may be used to make various articles, such as a prepreg, a resin film, a resin-coated copper, a laminate or a printed circuit board, and achieves improvement in at least one, more or all properties including resin filling property of prepreg, flame retardancy, alkali resistance, glass transition temperature, thermal dimensional stability (ratio of dimensional change under heat), thermal resistance after moisture absorption, peeling strength, dielectric constant and dissipation factor.

  提供了一种含磷化合物、一种含磷阻燃剂及其制备方法。此外，还提供了一种树脂组合物，其中包括含磷阻燃剂和含不饱和键树脂。该树脂组合物可用于制造各种物品，例如预浸料、树脂薄膜、树脂涂层铜、层压板或印刷电路板，并可改善至少一种、多种或所有性能，包括预浸料的树脂填充性能、阻燃性、耐碱性、玻璃化温度、热尺寸稳定性（受热尺寸变化率）、吸湿后的耐热性、剥离强度、介电常数和耗散因子。
• Crystal structures and isometricity comparison of methylated bisphenol F derivatives
  作者：Tobias Gruber、Robert Nestler、Wilhelm Seichter、Petra Bombicz

  DOI：10.1016/j.molstruc.2013.10.060

  日期：2014.1

  The syntheses and X-ray structures of three methylated bisphenol F derivatives and one respective analogue are reported. A special emphasis lies on the influence of methyl groups on the conformation of the common diphenylmethane scaffold. The introduction of four methyl groups to bisphenol F was found not to disturb its typical strong hydrogen bond network, and yet, to change the pattern of the aromatic interactions in the overall packing. According to the isometricity comparison, the addition of methyl groups to the diphenylmethane core has a greater influence on the conformation of the individual molecules, than the presence or absence of hydrogen bonding donors or acceptors. (C) 2013 Elsevier B.V. All rights reserved.