1,2,3,4-tetramethyldibenzofuran | 56444-53-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 1,2,3,4-tetramethyldibenzofuran
• 英文别名: 1,2,3,4-Tetramethyldibenzo[b,d]furan
• CAS: 56444-53-2
• 化学式: C₁₆H₁₆O
• 分子量: 224.302
• InChiKey: ORMRTWDNPANISK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  17
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  13.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1,2,3,4-tetramethyldibenzofuran 反应 3.0h， 以70%的产率得到3,4,5,6-Tetramethyl-2-hydroxybiphenyl
  参考文献：
  名称：

  A Facile Synthesis of the Unsymmetrically Methyl-Substituted 2-Hydroxybiphenyls by the Regioselective Cleavage of Dibenzofuran Derivatives with Lithium Metal

  摘要：

  DOI：

  10.1055/s-1980-29148
• 作为产物：
  描述：

  2-(2-羟基-3,5-二甲基苯基)-4,6-二甲基苯酚 生成 1,2,3,4-tetramethyldibenzofuran
  参考文献：
  名称：

  Bamberger; Brun, Chemische Berichte, 1907, vol. 40, p. 1952

  摘要：

  DOI：

文献信息

• Solvent effects on isomer distributions in acylation of 1,2,3,4-tetramethyldibenzofuran: regiospecific solvation of the intermediate σ-complex
  作者：Takashi Keumi、Yumiko Yagi、Yōkō Kato、Rikio Taniguchi、Makoto Tempōrin、Hidehiko Kitajima

  DOI：10.1039/p29840000799

  日期：——

  large solvent effect is observed in Friedel–Crafts acylation of 1,2,3,4-tetramethyldibenzofuran (TMD). 8-Acyl-TMD is by far the major product in nitrohydrocarbons while 7-acyl-TMD is favoured in chloro-hydrocarbons and is the major product in many cases. The influence of temperature, and the nature of the reaction medium, acylating agents, and added nitro-compounds on the isomer distribution, are examined

  1,2,3,4-四甲基二苯并呋喃（TMD）的Friedel-Crafts酰化反应中观察到了很大的溶剂作用。迄今为止，8-酰基-TMD是硝基烃中的主要产物，而7-酰基-TMD在氯代烃中是受欢迎的，并且在许多情况下是主要产物。详细检查了温度以及反应介质，酰化剂和添加的硝基化合物的性质对异构体分布的影响。结果表明，产物的重排，TMD的7位和8位之间的热力学差异，溶剂化不能降低酰基鎓离子的亲电性均不引起溶剂效应。硝基烃溶剂与导致8-酰基-TMD的中间体σ配合物的特定缔合被表示为反应途径。
• Keumi, Takashi; Nakamura, Masatoshi; Kitamura, Masao, Journal of the Chemical Society. Perkin transactions II, 1985, p. 909 - 914
  作者：Keumi, Takashi、Nakamura, Masatoshi、Kitamura, Masao、Tomioka, Naoto、Kitajima, Hidehiko

  DOI：——

  日期：——
• KEUMI TAKASHI; MURATA CHOZO; SASAKI YASUTO; KITAJIMA HIDEHIKO, SYNTHESIS, 1980, NO 8, 634-635
  作者：KEUMI TAKASHI、 MURATA CHOZO、 SASAKI YASUTO、 KITAJIMA HIDEHIKO

  DOI：——

  日期：——
• KEUMI TAKASHI; MURATA CHOZO; SASAKI YASUTO; OGASAWARA KOZO; KITAJIMA HIDE+, NIXON KAGAKU KAJSI, NIRRON KAGAKU KAISNI, J. CHEM. SOS. JAR., CHEM. AND I+
  作者：KEUMI TAKASHI、 MURATA CHOZO、 SASAKI YASUTO、 OGASAWARA KOZO、 KITAJIMA HIDE+

  DOI：——

  日期：——
• COMPOUND, ELECTRON TRANSPORT MATERIAL, DISPLAY PANEL AND DISPLAY APPARATUS
  申请人：Shanghai Tianma AM-OLED Co., Ltd.

  公开号：US20210130355A1

  公开（公告）日：2021-05-06

  The present disclosure provides a compound having a structure represented by Formula 1, where X 1 -X 4 are each independently selected from a carbon atom or a nitrogen atom, and at least two of X 1 -X 4 are each a nitrogen atom; R 1 -R 4 are independently absent or selected from hydrogen, C1-C20 alkyl, C1-C20 alkoxy, C1-C20 alkylthio, C1-C20 alkylamino, C6-C30 aryl, or C2-C30 heteroaryl; m is 1 or 2; n and q are each independently selected from 0, 1, or 2, n+q≥1, and m+n+q=3; Ar is C6-C30 aryl. The molecular structure of the compound has a nitrogen-containing multidentate ligand suitable to form complexes with metal Yb or LiQ to form a metal organic complex having multidentate bondings. When applied to an OLED device, it can effectively lower the turn-on voltage and operating voltage, improve the efficiency, and prolong lifetime of the OLED device.