2,4-difluoro-2',6'-dimethyl-1,1'-biphenyl | 501654-61-1

• 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: 2,4-difluoro-2',6'-dimethyl-1,1'-biphenyl
• 英文别名: 2,4-difluoro-2',6'-dimethylbiphenyl；1-(2,6-dimethylphenyl)-2,4-difluorobenzene
• CAS: 501654-61-1
• 化学式: C₁₄H₁₂F₂
• 分子量: 218.246
• InChiKey: NNDBDCBOFUFZPQ-UHFFFAOYSA-N

物化性质

• 沸点：
  248.2±35.0 °C(Predicted)
• 密度：
  1.115±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  16
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2,6-二甲基溴苯 、 2,4-二氟苯硼酸 在 tri-tert-butyl(decyl)phosphonium tetrafluoroborate 、 palladium diacetate 、 caesium carbonate 作用下， 以 甲苯 为溶剂， 反应 12.0h， 以42%的产率得到2,4-difluoro-2',6'-dimethyl-1,1'-biphenyl
  参考文献：
  名称：

  Palladium nanoparticles stabilized by sterically hindered phosphonium salts as Suzuki cross-coupling catalysts

  摘要：

  由醋酸钯在三叔丁基（癸基）四氟硼酸鏻存在下形成的平均粒径为 2.5±0.5 nm 的钯纳米颗粒在温和条件下作为涉及溴和氯烯烃的铃木交叉偶联反应的催化剂表现出很高的活性。

  DOI：

  10.1007/s11172-013-0088-z

文献信息

• A General and Special Catalyst for Suzuki-Miyaura Coupling Processes
  作者：Wenjun Tang、Andrew G. Capacci、Xudong Wei、Wenjie Li、Andre White、Nitinchandra D. Patel、Jolaine Savoie、Joe J. Gao、Sonia Rodriguez、Bo Qu、Nizar Haddad、Bruce Z. Lu、Dhileepkumar Krishnamurthy、Nathan K. Yee、Chris H. Senanayake

  DOI：10.1002/anie.201002404

  日期：2010.8.9

  Biaryl monophosphorus ligands containing a 2,3‐dihydrobenzo[d][1,3]oxaphosphole framework are highly effective for the palladium‐catalyzed Suzuki–Miyaura cross‐coupling reactions of a wide range of substrates. Ligand 1 has demonstrated excellent performance for coupling reactions of extremely hindered arylboronic acids.

  含有2,3-二氢苯并[ d ] [1,3]恶唑骨架的联芳基单磷配体对于钯催化的多种底物的Suzuki-Miyaura交叉偶联反应非常有效。配体1已显示出极受阻碍的芳基硼酸偶联反应的优异性能。
• NOVEL CHIRAL DIHYDROBENZOAZAPHOSPHOLE LIGANDS AND SYNTHESIS THEREOF
  申请人：Boehringer Ingelheim International GmbH

  公开号：US20180155377A1

  公开（公告）日：2018-06-07

  This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.

  这项发明涉及用于有机转化的新型磷配体。描述了在有机合成中制造和使用配体的方法。该发明还涉及用于制备新型配体的过程。
• Palladium Catalysed Cross-Coupling of Aryl Bromides with Functionalised Arylboronic Acids in the Presence of a Tetraphosphine Ligand
  作者：Henri Doucet、Maurice Santelli、Marie Feuerstein、Florian Berthiol

  DOI：10.1055/s-2002-34896

  日期：——

  cyclopentane/[PdCl(C3H5)]2 system catalyses efficiently the cross-coupling of aryl bromides with functionalised arylboronic acids. The electronic properties of the arylboronic acids seem to have a minor influence on the reaction rate. Better results were generally obtained for the reaction of electron poor aryl bromides associated with electron rich arylboronic acids rather than the contrary.

  Cis,cis,cis-1,2,3,4-四(二苯基膦甲基)-环戊烷/[PdCl(C3H5)]2系统有效地催化芳基溴化物与官能化芳基硼酸的交叉偶联。芳基硼酸的电子特性似乎对反应速率的影响很小。与富电子芳基硼酸相关的缺电子芳基溴化物的反应通常获得更好的结果，而不是相反。
• METHOD FOR PRODUCING UNSATURATED ORGANIC COMPOUND
  申请人：Asaumi Taku

  公开号：US20110046380A1

  公开（公告）日：2011-02-24

  A method for producing an unsaturated organic compound represented by the formula (3): (Y 1 ) m-1 —R 1 —R 2 —(Y 2 ) n-1 (3) wherein Y 1 represents R 2 or X 1 , and Y 2 represents R 1 or B(X 2 ) 2 , which comprises reacting a compound represented by the formula (1): R 1 (X 1 ) m (1) wherein R 1 represents an aromatic group or the like, X 1 represents a leaving group and m represents 1 or 2, with a compound represented by the formula (2): R 2 B(X 2 ) 2 } n (2) wherein R 2 represents an aromatic group or the like, X 2 represents a hydroxyl group or the like, and n represents 1 or 2, in the presence of (a) a nickel compound selected from a nickel carboxylate, nickel nitrate and a nickel halide, (b) a phosphine compound such as 1,4-bis(dicyclohexylphosphino) butane, (c) an amine selected from a primary amine and a diamine such as N,N,N′,N′-tetramethyl-1,2-ethanediamine, and (d) an inorganic base.

  一种用于生产由公式(3)表示的不饱和有机化合物的方法：(Y1)m-1—R1—R2—(Y2)n-1(3)，其中Y1代表R2或X1，Y2代表R1或B(X2)2，包括在以下条件下反应由公式(1)表示的化合物：R1(X1)m(1)，其中R1代表芳香族基团或类似物，X1代表离开基团，m代表1或2，与由公式(2)表示的化合物反应：R2B(X2)2}n(2)，其中R2代表芳香族基团或类似物，X2代表羟基或类似物，n代表1或2，在存在(a)选择自镍羧酸盐、硝酸镍和卤化镍的镍化合物，(b)膦化合物，如1,4-双(二环己基膦基)丁烷，(c)选择自一次胺和二胺的胺，如N,N,N′,N′-四甲基-1,2-乙二胺，和(d)无机碱。
• An indole-amide-based phosphine ligand enabling a general palladium-catalyzed sterically hindered Suzuki–Miyaura cross-coupling reaction
  作者：Shan Shan Ng、Zicong Chen、On Ying Yuen、Chau Ming So

  DOI：10.1039/d1ob02294f

  日期：——

  A novel family of indole-amide-based phosphine ligands was designed and synthesized. The Pd/InAm-phos (L1) catalytic system exhibited excellent efficiency in the Suzuki–Miyaura cross-coupling of sterically hindered (hetero)aryl chlorides to synthesize tri-ortho-substituted biaryls. Excellent product yields were obtained in a short reaction time (e.g., 10 min), and a Pd catalyst loading down to 50 ppm

  设计并合成了一个新的基于吲哚酰胺的膦配体家族。Pd/InAm-phos ( L1 ) 催化体系在空间位阻（杂）芳基氯化物的 Suzuki-Miyaura 交叉偶联合成三邻位取代联芳基化合物中表现出优异的效率。在很短的反应时间（例如，10 分钟）内获得了优异的产物收率，并且还实现了低至 50 ppm 的 Pd 催化剂负载。Pd- L1与 2-氯甲苯的氧化加成加合物也通过单晶 X 射线晶体学得到很好的表征，并显示出L1与钯的 κ 2 -P,O-配位。