2-methoxy-2'-methyl-1,1'-biphenyl | 19853-12-4

• 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-methoxy-2'-methyl-1,1'-biphenyl
• 英文别名: 2‐methoxy‐2'‐methylbiphenyl；2-methoxy-2′-methyl-1,1′-biphenyl；2-methoxy-2'-methyl-1,1’-biphenyl；1-(2-methoxyphenyl)-2-methylbenzene；1-methoxy-2-(2-methylphenyl)benzene；2-methoxyl-2’-methylbiphenyl
• CAS: 19853-12-4
• 化学式: C₁₄H₁₄O
• mdl: MFCD00196857
• 分子量: 198.265
• InChiKey: YDOGLCXULALGJP-UHFFFAOYSA-N

物化性质

• 熔点：
  42-44 °C
• 沸点：
  268.0±9.0 °C(Predicted)
• 密度：
  1.016±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.142
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-methoxy-2'-methyl-1,1'-biphenyl 在 N-溴代丁二酰亚胺(NBS) 、 三溴化硼 、 sodium hydride 、 过氧化苯甲酰 作用下， 以 四氯化碳 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 56.08h， 生成 2'-[6-(4-Nitro-benzylsulfanyl)-purin-9-ylmethyl]-biphenyl-2-ol
  参考文献：
  名称：

  Inhibition of Nucleoside Transport by New Analogues of 4-Nitrobenzylthioinosine:  Replacement of the Ribose Moiety by Substituted Benzyl Groups

  摘要：

  4-Nitrobenzylthioinosine (NBTI, 1) is a well-known inhibitor for the nucleoside transport protein ENT1. However, its highly polar nature is unfavorable for oral absorption and/or penetration into the CNS. In the search for compounds with lower polarity than NBTI we replaced its ribose moiety by substituted benzyl groups. Halogen, hydroxyl, (trifluoro)methyl(-oxy), nitro, and amine functionalities were among the substituents at the benzyl group. In general, substitution of the benzyl group resulted in a lower affinity for ENT1. Only 2-hydroxyl substitution showed a higher affinity. Most likely this is the result of hydrogen bonding. Substitution at the 2-position of the benzyl group with aryl groups was also addressed. Compared to parent compound carrying a 2-phenylbenzyl group, all synthesized analogues gave higher affinities. Introduction of fluoro, trifluoromethyl, methoxy, and hydroxyl groups at the phenyl group clearly showed that addition to the 4-position was preferable. Despite the highly different character of a ribose and a benzyl group, K-i values in the low nanomolar range were obtained for the benzyl-substituted derivatives. Compound 35, LUF5919, and compound 60, LUF5929, displayed the highest affinity (K-i = 39 nM for both compounds), having a polar surface area of 101 Angstrom(2) and 85 Angstrom(2), respectively.

  DOI：

  10.1021/jm049735v
• 作为产物：
  描述：

  邻甲基苯甲酰氯 在 bis-triphenylphosphine-palladium(II) chloride 、 碳酸氢钠 、 三乙胺 作用下， 以 1,4-二氧六环 、 N,N-二甲基乙酰胺 、 甲苯 为溶剂， 反应 5.0h， 生成 2-methoxy-2'-methyl-1,1'-biphenyl
  参考文献：
  名称：

  Palladium-Catalyzed Decarbonylative Suzuki–Miyaura Coupling of Amides To Achieve Biaryls via C–N Bond Cleavage

  摘要：

  The palladium-catalyzed decarbonylative Suzuki-Miyaura coupling of amides via selective amide C-N bond cleavage was reported, which afforded mild access to substitute biaryl products in the presence of low catalyst loading with NaHCO3 as the base in good yields within 4 h (29 examples).

  DOI：

  10.1021/acs.joc.9b01103

文献信息

• Air Stable, Sterically Hindered Ferrocenyl Dialkylphosphines for Palladium-Catalyzed C−C, C−N, and C−O Bond-Forming Cross-Couplings
  作者：Noriyasu Kataoka、Quinetta Shelby、James P. Stambuli、John F. Hartwig

  DOI：10.1021/jo025732j

  日期：2002.8.1

  aryl halides coupled with acyclic or cyclic secondary alkyl- and arylamines, with primary alkyl- and arylamines, and with aryl- and primary alkylboronic acids. These last couplings provide the first general procedure for reaction of terminal alkylboronic acids with aryl halides without toxic or expensive bases. The ligand not only generates highly active palladium catalysts, but it is air stable in

  已通过两步合成程序以高收率制备了五苯基二茂铁基二叔丁基膦，并且已研究了由带有该配体的配合物催化的各种交叉偶联过程的范围。该配体为芳基卤化物胺化和Suzuki偶联产生了非常普通的钯催化剂。对于未活化的芳基溴化物或氯化物的胺化，观察到的营业额约为1000。另外，该配体的络合物在温和条件下催化形成选定的芳基醚。反应包括富电子和贫电子的芳基溴化物和氯化物。在含有该配体的催化剂的存在下，这些芳基卤化物与无环或环状仲烷基和芳基胺，伯烷基和芳基胺，以及芳基和伯烷基硼酸偶联。这些最后的偶联为末端烷基硼酸与芳基卤化物的反应提供了第一个通用方法，而没有毒性或昂贵的碱。该配体不仅产生高活性的钯催化剂，而且在溶液和固态中都是空气稳定的。该配体的钯（0）配合物也具有空气稳定性，为固体，仅与溶液中的氧气缓慢反应。
• Catalyst for aromatic C—O, C—N, and C—C bond formation
  申请人：Yale University

  公开号：US06562989B2

  公开（公告）日：2003-05-13

  The present invention is directed to a transition metal catalyst, comprising a Group 8 metal and a ligand having the structure wherein R, R′ and R″ are organic groups having 1-15 carbon atoms, n=1-5, and m=0-4. The present invention is also directed to a method of forming a compound having an aromatic or vinylic carbon-oxygen, carbon-nitrogen, or carbon-carbon bond using the above catalyst. The catalyst and the method of using the catalyst are advantageous in preparation of compounds under mild conditions of approximately room temperature and pressure.

  本发明涉及一种过渡金属催化剂，包括一种第8族金属和具有结构的配体 其中R、R'和R"是具有1-15个碳原子的有机基团，n=1-5，m=0-4。本发明还涉及一种利用上述催化剂形成具有芳香性或乙烯基碳-氧、碳-氮或碳-碳键的化合物的方法。该催化剂和使用该催化剂的方法在大约室温和压力下的温和条件下制备化合物具有优势。
• The Suzuki–Miyaura Coupling of Nitroarenes
  作者：M. Ramu Yadav、Masahiro Nagaoka、Myuto Kashihara、Rong-Lin Zhong、Takanori Miyazaki、Shigeyoshi Sakaki、Yoshiaki Nakao

  DOI：10.1021/jacs.7b03159

  日期：2017.7.19

  Synthesis of biaryls via the Suzuki-Miyaura coupling (SMC) reaction using nitroarenes as an electrophilic coupling partners is described. Mechanistic studies have revealed that the catalytic cycle of this reaction is initiated by the cleavage of the aryl-nitro (Ar-NO2) bond by palladium, which represents an unprecedented elemental reaction.

  描述了通过 Suzuki-Miyaura 偶联 (SMC) 反应使用硝基芳烃作为亲电偶联伙伴合成联芳基化合物。机理研究表明，该反应的催化循环是由钯对芳基-硝基 (Ar-NO2) 键的裂解引发的，这是一种前所未有的元素反应。
• A Highly Active and General Catalyst for the Stille Coupling Reaction of Unreactive Aryl, Heteroaryl, and Vinyl Chlorides under Mild Conditions
  作者：Dong-Hwan Lee、Yingjie Qian、Ji-Hoon Park、Jong-Suk Lee、Sang-Eun Shim、Myung-Jong Jin

  DOI：10.1002/adsc.201300075

  日期：2013.6.17

  efficient and general catalyst in the Stille coupling reaction of various aryl and heteroaryl chlorides with organostannanes. The results show that this catalytic system allows for the use of less reactive substrates such as deactivated or sterically hindered aryl chlorides. A catalyst loading of 0.5 mol% was sufficient to achieve excellent performance under relatively mild reaction conditions. Furthermore

  在各种芳基和杂芳基氯化物与有机锡的斯蒂尔偶联反应中，发现β-二酮亚氨基膦膦-钯配合物可作为一种有效的通用催化剂。结果表明，该催化体系允许使用反应性较低的底物，例如失活或空间受阻的芳基氯化物。0.5mol％的催化剂负载量足以在相对温和的反应条件下获得优异的性能。此外，催化剂的范围扩展到氯乙烯的偶联。
• Halogen‐Bridged Methylnaphthyl Palladium Dimers as Versatile Catalyst Precursors in Coupling Reactions
  作者：Nardana Sivendran、Nico Pirkl、Zhiyong Hu、Angelino Doppiu、Lukas J. Gooßen

  DOI：10.1002/anie.202110450

  日期：2021.11.15

  Halide-bridged 1- and 2-methylnaphthyl palladium dimers are presented as convenient, yet highly efficient palladium sources for cross-coupling catalysis. The bench-stable complexes smoothly react with various ligands yielding monoligated palladium precatalysts. These display record-setting activity in various catalytic reactions, clearly beyond that achievable by ligand screening alone.

  卤化物桥接的 1-和 2-甲基萘基钯二聚体被认为是用于交叉偶联催化的方便且高效的钯源。台架稳定的配合物与各种配体顺利反应，产生单配位钯预催化剂。这些在各种催化反应中显示出创纪录的活性，明显超出了仅通过配体筛选所能达到的水平。