2-(3-cyanophenyl)benzoxazole

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-(3-cyanophenyl)benzoxazole
• 英文别名: 3-(Benzoxazol-2-yl)benzonitrile；3-(1,3-benzoxazol-2-yl)benzonitrile
• 化学式: C₁₄H₈N₂O
• 分子量: 220.23
• InChiKey: RJKKXDKJSLDBLF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  49.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  间碘苯腈 在 sodium periodate 、 1,10-菲罗啉 、 sodium acetate 、 palladium diacetate 、 caesium carbonate 、 溶剂黄146 作用下， 以 二甲基亚砜 为溶剂， 反应 22.0h， 生成 2-(3-cyanophenyl)benzoxazole
  参考文献：
  名称：

  苯并恶唑CH键与碘代苯二乙酸酯直接芳基化

  摘要：

  以碘代苯二乙酸酯为芳基化剂，已实现Pd（OAc）2催化的苯并恶唑CH键的直接芳基化，产率中等至良好。该方法可耐受一系列官能团，例如甲氧基，硝基，氰基，氯和溴基。

  DOI：

  10.1016/j.tetlet.2012.06.076

文献信息

• Bimetallic Cooperative Catalysis for Decarbonylative Heteroarylation of Carboxylic Acids via C‐O/C‐H Coupling
  作者：Chengwei Liu、Chong‐Lei Ji、Tongliang Zhou、Xin Hong、Michal Szostak

  DOI：10.1002/anie.202100949

  日期：2021.5.3

  Cooperative bimetallic catalysis is a fundamental approach in modern synthetic chemistry. We report bimetallic cooperative catalysis for the direct decarbonylative heteroarylation of ubiquitous carboxylic acids via acyl C‐O/C‐H coupling. This novel catalytic system exploits the cooperative action of a copper catalyst and a palladium catalyst in decarbonylation, which enables highly chemoselective synthesis

  协同双金属催化是现代合成化学的基本方法。我们报告了通过酰基 C-O/C-H 偶联对普遍存在的羧酸进行直接脱羰杂芳基化的双金属协同催化。这种新型催化体系利用铜催化剂和钯催化剂在脱羰基化中的协同作用，在没有预官能化或导向基团的情况下，通过羧酸与杂芳烃的偶联，能够高度化学选择性地合成重要的杂二芳基基序。这种协同脱羰方法使用常见的羧酸，并显示出非常广泛的底物范围（> 70 个示例），包括药物的后期修饰和生物活性剂的简化合成。进行了广泛的机理和计算研究，以深入了解反应的机理。关键步骤涉及通过铜-芳基物质与氧化加成/脱羰产生的钯（II）中间体的金属转移来交叉两个催化循环。
• Carbonates: eco-friendly solvents for palladium-catalysed direct arylation of heteroaromatics
  作者：Jia Jia Dong、Julien Roger、Cécile Verrier、Thibaut Martin、Ronan Le Goff、Christophe Hoarau、Henri Doucet

  DOI：10.1039/c0gc00229a

  日期：——

  The palladium-catalysed direct 2-, 4- or 5-arylation of a wide range of heteroaromatics with aryl halides proceed in moderate to good yields using the eco-friendly solvents carbonates. The best yields were obtained using benzoxazole or thiazole derivatives. The arylation of furan, thiophene, pyrrole, imidazole or isoxazole derivatives was found to require a more elevated reaction temperature.

  这 钯环保型芳烃卤化物催化的各种杂芳族化合物与芳基卤化物的直接2-，4-或5-芳基化反应均能以中等至良好的收率进行 溶剂碳酸盐。使用以下方法可获得最佳产量苯并恶唑 或者 噻唑衍生品。这芳基化 的 呋喃， 噻吩， 吡咯， 咪唑 或者 异恶唑 发现衍生物需要更高的反应温度。
• Synthesis of Benz-Fused Azoles via C-Heteroatom Coupling Reactions Catalyzed by Cu(I) in the Presence of Glycosyltriazole Ligands
  作者：Nidhi Mishra、Anoop S. Singh、Anand K. Agrahari、Sumit K. Singh、Mala Singh、Vinod K. Tiwari

  DOI：10.1021/acscombsci.9b00004

  日期：2019.5.13

  and contain multiple metal-binding units that may assist in metal-mediated catalysis. Azide derivatives of d-glucose have been converted to their respective aryltriazoles and screened as ligands for the synthesis of 2-substituted benz-fused azoles and benzimidazoquinazolinones by Cu-catalyzed intramolecular Ullmann type C-heteroatom coupling. Good to excellent yields for a variety of benz-fused heterocyles

  糖基三唑可以方便地获得，并且包含多个金属结合单元，可以协助金属介导的催化作用。d-葡萄糖的叠氮化物衍生物已被转化为它们各自的芳基三唑，并被筛选为通过铜催化的分子内Ullmann型C-杂原子偶联合成2-取代的苯并稠合的唑和苯并咪唑并喹唑啉酮的配体。对于这种容易获得的催化体系，获得了多种苯并稠合杂环的良好或优异的产率。
• Direct arylation of oxazole and benzoxazole with aryl or heteroaryl halides using a palladium–diphosphine catalyst
  作者：Fazia Derridj、Safia Djebbar、Ouassini Benali-Baitich、Henri Doucet

  DOI：10.1016/j.jorganchem.2007.10.028

  日期：2008.1

  Through the use of PdCl(dppb)(C3H5) as a catalyst, a range of aryl bromides and chlorides undergoes coupling via C-H bond activation/flunctionalization reaction with oxazole or benzoxazole in good yields. This air-stable catalyst can be used at low loadings with several substrates. Surprisingly, better results in terms of substrate/catalyst ratio were obtained in several cases using electron-excessive aryl bromides than with the electron-deficient ones. This seems to be mainly due to the relatively low thermal stability of some of the 2-arylbenzoxazoles formed with electron -deficient aryl halides. With these substrates, in order to obtain higher yields of product, the reactions had to be performed at a lower temperature (100-120 degrees C) using a larger amount of catalyst. On the other hand, in the presence of the most stable products, the reactions were performed at 150 degrees C using as little as 0.2 mol% catalyst. Arylation of benzoxazole with heteroaryl bromides also gave the coupling products in moderate to high yields using 0.2-5 mol% catalyst. With this catalyst, electron-deficient aryl chloride such as 4-chlorobenzonitrile, 4-chloroacetophenone or 2-chloronitrobenzene have also been used successfully. (c) 2007 Elsevier B.V. All rights reserved.