2,6-dimethyl-2'-ethylbiphenyl | 1154423-84-3

• 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: 2,6-dimethyl-2'-ethylbiphenyl
• 英文别名: 2’-ethyl-2,6-dimethyl-1,1’-biphenyl；2'-ethyl-2,6-dimethylbiphenyl；2-(2-Ethylphenyl)-1,3-dimethylbenzene
• CAS: 1154423-84-3
• 化学式: C₁₆H₁₈
• 分子量: 210.319
• InChiKey: ZEDMBNKGJWWYOZ-UHFFFAOYSA-N

物化性质

• 沸点：
  300.3±32.0 °C(predicted)
• 密度：
  0.955±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.5
• 重原子数：
  16
• 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：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  2-氯-1,3-二甲苯 、 2-乙基苯硼酸 在 tris-(dibenzylideneacetone)dipalladium(0) 、 potassium phosphate monohydrate 、 2-（2-甲氧基苯基）-1-甲基-3-二苯基膦基）-1H-吲哚PPh2-Andole-Phos 作用下， 以 1,4-二氧六环 为溶剂， 反应 24.0h， 以92%的产率得到2,6-dimethyl-2'-ethylbiphenyl
  参考文献：
  名称：

  仅具有PPh2部分的显着有效磷光体：四正取代的联芳基合成在Pd催化的交叉偶联反应中的应用

  摘要：

  扩展ArPPh 2的视野：提出了三芳基膦配体的新应用。Pd– L1和Pd– L2络合物在Suzuki-Miyaura芳基氯化物的交叉偶联中具有极高的活性。仅通过使用三芳基膦配体，就可以实现四邻位取代的联芳基化合物的极为拥挤的合成。

  DOI：

  10.1002/chem.201000723

文献信息

• Highly efficient carbazolyl-derived phosphine ligands: application to sterically hindered biaryl couplings
  作者：Sheung Chun To、Fuk Yee Kwong

  DOI：10.1039/c1cc10708a

  日期：——

  A new family of phosphine ligands bearing a bulky carbazolyl scaffold is described. With the combination of ligand 2a and Pd(OAc)2, difficult tri-ortho-substituted biaryl couplings are accomplished smoothly. In particular, the catalyst loading as low as 0.02 mol% of Pd for non-activated 2,6-disubstituted aryl chloride coupling can be achieved.

  描述了一类新型膦配体，这些配体含有一个庞大的咔唲基骨架。通过结合配体2a和Pd(OAc)2，成功实现了难以进行的三邻位取代联苯偶联反应。特别是，对于非活化的2,6-二取代芳基氯偶联反应，可以实现低至0.02mol%的钯催化剂负载量。
• Remarkably Effective Phosphanes Simply with a PPh₂Moiety: Application to Pd-Catalysed Cross-Coupling Reactions for Tetra-<i>ortho</i>-substituted Biaryl Syntheses
  作者：Chau Ming So、Wing Kin Chow、Pui Ying Choy、Chak Po Lau、Fuk Yee Kwong

  DOI：10.1002/chem.201000723

  日期：2010.7.19

  Expanding the horizons of ArPPh2: New applications of triarylphosphane ligands are presented. The Pd–L1 and Pd–L2 complexes offer exceptionally high activity in Suzuki–Miyaura cross‐couplings of aryl chlorides. The extremely congested synthesis of tetra‐ortho‐substituted biaryl compounds is achieved for the first time by simply using triarylphosphane ligands.

  扩展ArPPh 2的视野：提出了三芳基膦配体的新应用。Pd– L1和Pd– L2络合物在Suzuki-Miyaura芳基氯化物的交叉偶联中具有极高的活性。仅通过使用三芳基膦配体，就可以实现四邻位取代的联芳基化合物的极为拥挤的合成。
• [EN] SYNTHESIS OF PHOSPHINE LIGANDS BEARING TUNABLE LINKAGE: METHODS OF THEIR USE IN CATALYSIS<br/>[FR] SYNTHÈSE DE LIGANDS DE PHOSPHINE PORTANT UNE LIAISON RÉGLABLE : PROCÉDÉS POUR LEUR UTILISATION DANS UNE CATALYSE
  申请人：THE HONG KONG POLYTECHNIC UNIV SHENZHEN RESEARCH INSTITUTE

  公开号：WO2017193288A1

  公开（公告）日：2017-11-16

  A series of novel linked indolyl phosphine ligands for transition metals, the synthesis thereof and their use in catalytic coupling reactions are provided. The ligands provide improvements of trasition-metal-catalyzed reactions, including the range of substrates scope, reaction conditions and efficieny.

  提供一系列新型的连接吲哚基膦配体用于过渡金属，其合成以及它们在催化偶联反应中的应用。这些配体提供了对过渡金属催化反应的改进，包括底物范围、反应条件和效率。
• Biphenylene-Substituted Ruthenocenylphosphine for Suzuki−Miyaura Coupling of Sterically Hindered Aryl Bromides
  作者：Takashi Hoshi、Ippei Saitoh、Taichi Nakazawa、Toshio Suzuki、Jun-ichi Sakai、Hisahiro Hagiwara

  DOI：10.1021/jo900550g

  日期：2009.5.15

  A highly general, active, and stable catalytic system was realized in the palladium-catalyzed Suzuki-Miyaura reactions of sterically hindered aryl bromides with arylboronic acids using biphenylene-substituted di-tert-butylruthenocenylphosphine (R-Phos) as a supporting ligand.
• An Active, General, and Long-Lived Palladium Catalyst for Cross-Couplings of Deactivated (Hetero)aryl Chlorides and Bromides with Arylboronic Acids
  作者：Takashi Hoshi、Tomonobu Honma、Ayako Mori、Maki Konishi、Tsutomu Sato、Hisahiro Hagiwara、Toshio Suzuki

  DOI：10.1021/jo402089r

  日期：2013.11.15

  An active, general, and long-lived palladium catalyst for Suzuki-Miyaura reactions of aryl and heteroaryl chlorides deactivated by steric hindrance, electron richness, and coordinating functional groups is reported. In reactions of arylbromide bearing two o-tert-butyl substituents, C(sp(3))-H arylation of the tert-butyl group, rather than the Suzuki-Miyaura reaction, proceeded in excellent yield. The key to the success of the reactions was the development of biphenylene-substituted dicyclohexylruthenocenylphosphine (CyR-Phos) as a supporting ligand.