1 -邻甲苯-1H -吡唑 | 20157-44-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 中文名称: 1 -邻甲苯-1H -吡唑
• 中文别名: 1-邻甲苯-1H-吡唑
• 英文名称: 1-o-tolyl-1H-pyrazole
• 英文别名: 1-(2-methylphenyl)-1H-pyrazole；1-(2-methylphenyl)pyrazole；1-(o-tolyl)pyrazole；1-(o-Tolyl)-1H-pyrazole
• CAS: 20157-44-2
• 化学式: C₁₀H₁₀N₂
• 分子量: 158.203
• InChiKey: FBJOICPYOFJUBH-UHFFFAOYSA-N

物化性质

• 沸点：
  100 °C(Press: 1 Torr)
• 密度：
  1.04±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  17.8
• 氢给体数：
  0
• 氢受体数：
  1

安全信息

• 海关编码：
  2933199090
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335

反应信息

• 作为反应物：
  描述：

  1 -邻甲苯-1H -吡唑 在 十二羰基三钌 、 norbornene 、 cesium fluoride 作用下， 以 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 100.0 ℃ 、101.33 kPa 条件下， 反应 36.0h， 生成 3-methyl-2-(1H-pyrazol-1-yl)benzoic acid
  参考文献：
  名称：

  Ruthenium-Catalyzed C–H Silylation of 1-Arylpyrazole Derivatives and Fluoride-Mediated Carboxylation: Use of Two Nitrogen Atoms of the Pyrazole Group

  摘要：

  Carboxylation of 1-arylpyrazole derivatives was developed using a ruthenium-catalyzed ortho silylation in conjunction with fluoride-mediated carboxylation with carbon dioxide. The two nitrogen atoms of pyrazole play crucial roles in promoting ortho silylation via the formation of a five-membered ruthenacycle and in accelerating aryl anion formation by lowering the electron density of the aromatic ring.

  DOI：

  10.1055/s-0033-1341230
• 作为产物：
  描述：

  1-(2-(bis(phenylsulfonyl)methyl)phenyl)-1H-pyrazole 在 magnesium 作用下， 以 甲醇 为溶剂， 反应 2.0h， 以70%的产率得到1 -邻甲苯-1H -吡唑
  参考文献：
  名称：

  通过Rh（III）催化的双（苯磺酰基）卡宾的迁移插入和随后的转化进行芳香族C-H甲基化和其他功能化

  摘要：

  已经开发了 Rh(III) 催化的双（苯磺酰基）卡宾迁移插入芳香族 C-H 键。在温和的条件下以良好的收率制备了多种双（苯磺酰基）甲基衍生物。还原脱磺酰化后很容易得到甲基化产物。此外，还证明了双（苯磺酰基）甲基向三氘代甲基、醛和其他官能团的多种转化。

  DOI：

  10.1021/acs.joc.1c00899

文献信息

• Expedient C–H Amidations of Heteroaryl Arenes Catalyzed by Versatile Ruthenium(II) Catalysts
  作者：Vedhagiri S. Thirunavukkarasu、Keshav Raghuvanshi、Lutz Ackermann

  DOI：10.1021/ol401321q

  日期：2013.7.5

  Heteroaryl-substituted arenes and heteroarenes were efficiently amidated through ruthenium-catalyzed C–H bond functionalizations with a variety of sulfonyl azides. Particularly, cationic ruthenium(II) complexes proved to be most effective and allowed nitrogenations of electron-rich and electron-deficient arenes with ample substrate scope.

  杂芳基取代的芳烃和杂芳烃通过钌催化的各种磺酰叠氮化物的C–H键官能化反应而得到有效酰胺化。特别是，阳离子钌（II）配合物被证明是最有效的方法，可以使富电子和缺电子的芳烃在足够的底物范围内进行氮化。
• Salen–Cu(II) Complex Catalysed N-Arylation of Pyrazole under Mild Conditions
  作者：Yan Liu、Wei Liu、Qin Zhang、Ping Liu、Jian-Wei Xie、Bin Dai

  DOI：10.3184/174751913x13795203316679

  日期：2013.10

  2-cyclohexenediamine), and (Salph)Cu (salph = N, N’-bis(salicylidene)-1,2-phenylenediamine) were synthesised and evaluated as catalysts for the N-arylation of pyrazole with aryl halides. A variety of aryl iodides and bromides underwent coupling with pyrazole, promoted by the (Saldch)Cu complex, in moderate to excellent yields without the protection by an inert gas.

  三种廉价且空气/水分稳定的复合物 (Salden)Cu (Salden = N, N'-双(salicylidene)-1,2-二甲基乙二胺), (Saldch)Cu (Saldch = N, N'-bis(salicylidene) -1,2-环己二胺）和（Salph）Cu（salph = N，N'-双（水杨烯）-1,2-苯二胺）被合成并评估为吡唑与芳基卤化物的 N-芳基化的催化剂。在 (Saldch)Cu 配合物的促进下，各种芳基碘化物和溴化物与吡唑偶联，产率中等至极好，无需惰性气体保护。
• Cobalt(III)-Catalyzed Direct <i>ortho</i> -Alkenylation of Arylpyrazoles: A Comparative Study on Decarboxylation and Desilylation
  作者：Anil Kumar、Nachimuthu Muniraj、Kandikere Ramaiah Prabhu

  DOI：10.1002/ejoc.201900270

  日期：2019.4.30

  A comparative study on Co-III-catalyzed direct C-H bond alkenylation of 1-phenylpyrazole derivatives with alkynyl carboxylic acids and arylalkynylsilanes under redox-neutral conditions has been disclosed. These methods show excellent selectivity with good to excellent yields. Trimethylsilylacetylene has been utilized as a vinyl source to obtain the corresponding styrene derivatives. The major differences

  已经公开了在氧化还原中性条件下 Co-III 催化的 1-苯基吡唑衍生物与炔基羧酸和芳基炔基硅烷的直接 CH 键烯基化的比较研究。这些方法显示出优异的选择性和良好的收率。三甲基甲硅烷基乙炔已被用作乙烯基来源以获得相应的苯乙烯衍生物。这两个反应之间的主要区别在于脱羧反应在碱添加剂存在下进行，而脱甲硅烷基化在酸添加剂存在下进行。开发的方法与各种功能组兼容。
• Copper-Catalyzed Arylation of Nitrogen Heterocycles from Anilines under Ligand-Free Conditions
  作者：Dounia Toummini、Anis Tlili、Julien Bergès、Fouad Ouazzani、Marc Taillefer

  DOI：10.1002/chem.201404982

  日期：2014.11.3

  The arylation of pyrazole and derivatives can be achieved by coupling arenediazonium species (formed in situ from anilines) by using a catalytic system that employs low‐toxicity and inexpensive copper metal under very mild and ligand‐free conditions (T=20 °C). From other nitrogen heterocycles, the presence of an additive (NBu4I) significantly improves the efficiency of the catalytic system. These results

  吡唑和衍生物的芳基化反应可以通过使用催化系统偶联槟榔重氮物种（由苯胺原位形成）来实现，该催化系统在非常温和且无配体的条件下（T = 20°C）使用低毒性和廉价的铜金属。与其他氮杂环相比，添加剂（NBu 4 I）的存在可显着提高催化体系的效率。这些结果代表C的第一实施例从芳基重氮物种N键的形成。
• Method of forming a carbon-carbon or carbon-heteroatom linkage
  申请人：Taillefer Marc

  公开号：US20050234239A1

  公开（公告）日：2005-10-20

  The invention relates to a method of creating a carbon-carbon or carbon-heteroatom linkage by reacting an unsaturated compound bearing a leaving group and a nucleophilic compound. More specifically, the invention relates to the creation of a carbon-nitrogen linkage involving the arylation of nitrogenous organic derivatives. The inventive method consists in creating a carbon-carbon or carbon-heteroatom linkage by reacting an unsaturated compound bearing a leaving group and a nucleophilic compound providing a carbon atom or a heteroatom (HE) capable of being substituted for the leaving group, thereby creating a C—C or C-HE linkage. The invention is characterised in that the reaction is carried out in the presence of an effective quantity of a catalyst based on copper and at least one ligand comprising at least one imine function and at least one additional nitrogen atom as chelating atoms

  该发明涉及一种通过使带有离去基团和亲核化合物的不饱和化合物发生反应来创建碳-碳或碳-杂原子键的方法。更具体地，该发明涉及涉及通过芳基化氮有机衍生物来创建碳-氮键。该创新方法包括通过使带有离去基团和提供能够替代离去基团的碳原子或杂原子（HE）的亲核化合物发生反应来创建碳-碳或碳-杂原子键。该发明的特点在于，在铜基催化剂和至少包含至少一个亚胺功能和至少一个额外氮原子作为螯合原子的配体的有效量存在下进行反应。