2,5-bis(phenylseleno)hydroquinone dimethyl ether

• 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: 2,5-bis(phenylseleno)hydroquinone dimethyl ether
• 英文别名: 1,4-dimethoxy-2,5-bis(phenylseleno)benzene；1,4-dimethoxy-2,5-bis(phenylselanyl)benzene
• 化学式: C₂₀H₁₈O₂Se₂
• 分子量: 448.282
• InChiKey: PKYHNTPHWZHARK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.01
• 重原子数：
  24
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  二苯基二硒醚 、 对苯二甲醚 在 dihydroxy phenylselenonium p-toluenesulfonate 作用下， 以 溶剂黄146 为溶剂， 以64%的产率得到2,5-bis(phenylseleno)hydroquinone dimethyl ether
  参考文献：
  名称：

  Relations between 77Se NMR chemical shifts of (phenylseleno)benzenes and their molecular structures derived from nine X-ray crystal structures

  摘要：

  从取代的(苯基硒)苯的NMR测量中生成了一幅广泛的77Se化学位移库，包括33种新化合物。化学位移的变化范围覆盖了265 ppm，从446 ppm到181 ppm不等。 已确定九个选定的取代(苯基硒)苯的晶体结构。晶体结构的分析支持了在晶体结构中观察到的硒与邻位取代基之间的空间相互作用在溶液中也可能存在。 77Se NMR化学位移的变化可以从与邻位取代基的分子内相互作用中进行合理化。此外，这些邻效应似乎是粗略可加的，实际上影响77Se NMR化学位移变化的是相互作用，而不是由此产生的构象约束。

  DOI：

  10.1039/b211130f

文献信息

• Electrophilic organic selenium reagents—protonated seleninic acids as precursors for unsymmetrical aromatic selenides
  作者：Nicolai Stuhr-Hansen、Theis Ivan Sølling、Lars Henriksen

  DOI：10.1016/j.tet.2011.02.004

  日期：2011.4

  Arylselenylations of methylbenzenes, methoxybenzenes and thiophene were smoothly achieved with selenenium ions generated by comproportionation of 1:1 mixtures of p-toluenesulfonic acid salts of seleninic acids and the corresponding diselenides. A series of p-toluenesulfonic salts of seleninic acids were prepared by hydrogen peroxide oxidation of the corresponding diselenides in the presence of p-toluenesulfonic acid. Novel 2-(organylseleno)thiophenes were obtained by heating the protonated seleninic acids with a 50-fold excess of thiophene in glacial acetic acid. (C) 2011 Published by Elsevier Ltd.
• Relations between 77Se NMR chemical shifts of (phenylseleno)benzenes and their molecular structures derived from nine X-ray crystal structures
  作者：Jette Oddershede、Lars Henriksen、Sine Larsen

  DOI：10.1039/b211130f

  日期：2003.3.13

  An extensive library of 77Se chemical shifts have been generated from the NMR measurements on substituted (phenylseleno)benzenes, including 33 new compounds. The variation in chemical shifts cover 265 ppm ranging from 446 to 181 ppm. Crystal structures have been determined for nine selected representatives of the substituted (phenylseleno)benzenes. The analysis of the crystal structures supported that through-space interactions between selenium and the ortho-substituent observed in the crystal structures also are likely to be present in solution. The variation in the 77Se NMR chemical shifts can be rationalised from the intramolecular interactions with the substituent in the ortho-position. Furthermore it appears that these ortho-effects are roughly additive, and that it is the actual interactions and not the resulting conformational constraints that are responsible for the variations in the 77Se NMR chemical shifts.

  从取代的(苯基硒)苯的NMR测量中生成了一幅广泛的77Se化学位移库，包括33种新化合物。化学位移的变化范围覆盖了265 ppm，从446 ppm到181 ppm不等。 已确定九个选定的取代(苯基硒)苯的晶体结构。晶体结构的分析支持了在晶体结构中观察到的硒与邻位取代基之间的空间相互作用在溶液中也可能存在。 77Se NMR化学位移的变化可以从与邻位取代基的分子内相互作用中进行合理化。此外，这些邻效应似乎是粗略可加的，实际上影响77Se NMR化学位移变化的是相互作用，而不是由此产生的构象约束。