2,3',4',5-tetramethyldiphenyl 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: 2,3',4',5-tetramethyldiphenyl ether
• 英文别名: 2-(3,4-Dimethylphenoxy)-1,4-dimethylbenzene
• 化学式: C₁₆H₁₈O
• 分子量: 226.318
• InChiKey: HHKWOHFVQXMEQI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  3,4-二甲基苯酚 、 2-氯-1,4-二甲基苯 在 tris(dibenzylideneacetone)dipalladium (0) 、 sodium hydride 、 2-二叔丁基磷-2-(N,N-二甲氨基)联苯 作用下， 生成 2,3',4',5-tetramethyldiphenyl ether
  参考文献：
  名称：

  新型富电子大膦配体促进钯催化制备二芳基醚

  摘要：

  描述了钯催化形成二芳基醚的一般方法。富含电子的、庞大的芳基二烷基膦配体，其中两个烷基是叔丁基或 1-金刚烷基，是转化成功的关键。使用氢化钠或磷酸钾作为碱，在 100 °C 的甲苯中，可以将各种缺电子、电子中性和富电子的芳基溴化物、氯化物和三氟甲磺酸酯与各种酚结合。膦配体庞大而碱性的性质被认为是提高二芳基醚从钯中还原消除的速率的原因。

  DOI：

  10.1021/ja990324r

文献信息

• LIGANDS FOR METALS AND METAL-CATALYZED PROCESSES
  申请人：MASSACHUSETTS INSTITUTE OF TECHNOLOGY

  公开号：EP1097158B1

  公开（公告）日：2006-01-25
• Ligands for metals and improved metal-catalyzed processes based thereon
  申请人：Massachussetts Institute of Technology

  公开号：EP1354887B1

  公开（公告）日：2007-04-25
• POLYIMIDES DOPE COMPOSITION, PREPARATION METHOD OF HOLLOW FIBER USING THE SAME AND HOLLOW FIBER PREPARED THEREFROM
  申请人：LEE Young-Moo

  公开号：US20090286078A1

  公开（公告）日：2009-11-19

  Disclosed herein are a polyimide dope solution composition, a method for preparing a hollow fiber using the composition and a hollow fiber prepared by the method. More specifically, disclosed are a method for preparing a hollow fiber, comprising preparing a polyimide dope solution composition comprising polyhydroxyimide, polythiolimide or polyaminoimide, spinning the composition to prepare a hollow fiber, and thermally rearranging the hollow fiber, and the hollow fiber prepared by the method. In accordance with the method, a hollow fiber made of a high free volume polymer membrane can be prepared by spinning the dope solution composition to prepare a hollow fiber and thermally rearranging the hollow fiber via thermal treatment. The hollow fiber thus prepared exhibits excellent gas permeability and selectivity, thus being suitable for use as a gas separation membrane.
• POLYAMIC ACIDS DOPE COMPOSITION, PREPARATION METHOD OF HOLLOW FIBER USING THE SAME AND HOLLOW FIBER PREPARED THEREFROM
  申请人：LEE Young-Moo

  公开号：US20090286904A1

  公开（公告）日：2009-11-19

  Disclosed herein are a polyamic acid dope solution composition, a method for preparing a hollow fiber using the composition and a hollow fiber prepared by the method. More specifically, disclosed are a method for preparing a hollow fiber, comprising preparing a polyamic acid dope solution composition comprising polyhydroxyamic acid, polythiolamic acid or polyaminoamic acid, spinning the composition to prepare a hollow fiber, and imidizing and thermally rearranging the hollow fiber, and the hollow fiber prepared by the method. In accordance with the method, a hollow fiber made of a high free volume polymer membrane can be prepared by spinning the dope solution composition to prepare a hollow fiber and thermally rearranging the hollow fiber via thermal treatment. The hollow fiber thus prepared exhibits excellent gas permeability and selectivity, thus being suitable for use as a gas separation membrane.
• POLYMER COMPOUNDS AND A PREPARATION METHOD THEREOF
  申请人：LEE Young-Moo

  公开号：US20100099804A1

  公开（公告）日：2010-04-22

  Disclosed herein are polymer compounds, a method for preparing thereof. More specifically, provided are polymer compounds with well-connected, narrow size distribution free-volume element and a method for preparing the polymer compounds by thermal rearrangement for aromatic polyimides containing ortho-positioned functional groups in the solid state.