1-(3-chlorophenyl)-1H-pyrazole | 57211-65-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 1-(3-chlorophenyl)-1H-pyrazole
• 英文别名: 1-(3-chlorophenyl) pyrazole；1-(3-Chlorophenyl)pyrazole
• CAS: 57211-65-1
• 化学式: C₉H₇ClN₂
• 分子量: 178.621
• InChiKey: UKTWBTORFIIARB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  17.8
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1-(3-chlorophenyl)-1H-pyrazole 在 dipotassium peroxodisulfate 、 palladium diacetate 作用下， 以 三氟乙酸 、 三氟乙酸酐 为溶剂， 反应 12.0h， 以48%的产率得到1,1′-(4,4′-dichlorobiphenyl-2,2′-diyl)bis(1H-pyrazole)
  参考文献：
  名称：

  Palladium-Catalyzed Chelation-Assisted Regioselective Oxidative Dehydrogenative Homocoupling/Ortho-Hydroxylation in N-Phenylpyrazoles

  摘要：

  A palladium-catalyzed pyrazole-directed regioselective oxidative C(sp2)-H functionalization of the N-phenyl ring in N-phenylpyrazoles to afford either a biaryl bis-pyrazole (via dehydrogenative homocoupling) or N-(o-hydroxyphenyl)pyrazole (via C-H oxygenation) or their mixture is described. The substitutions on the N-phenyl ring and the pyrazole ring and the dilution of the reaction medium with respect to the TFA/TFAA mixture (substrate concentration) have a remarkable influence on the outcome of the reaction. It was discovered that if the reactions were performed under highly dilute conditions (ca. 10 times) then N-(o-hydroxyphenyl)pyrazoles were the major or the sole products.

  DOI：

  10.1021/acs.joc.5b00733
• 作为产物：
  描述：

  3-m-Chlorophenylsydnone 、 丙烯酸 在 dipotassium peroxodisulfate 作用下， 以 1,2-二氯乙烷 为溶剂， 反应 16.0h， 以52%的产率得到1-(3-chlorophenyl)-1H-pyrazole
  参考文献：
  名称：

  Facile Synthesis of 1-Arylpyrazoles

  摘要：

  A convenient and transition-metal-free synthesis of 1-arylpyrazoles that involves the cycloaddition of 3-arylsydnones and acrylic acid is presented. The process proceeds smoothly to obtain the target products with moderate to high yields.

  DOI：

  10.1055/s-0034-1380658

文献信息

• 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。
• α-d-Galacturonic Acid as Natural Ligand for Selective Copper-Catalyzed N-Arylation of N-Containing Heterocycles
  作者：Chunling Yuan、Yingdai Zhao、Li Zheng

  DOI：10.1055/s-0039-1690226

  日期：2019.12

  The first application of α-d-galacturonic acid hydrate (GalA) is reported here, as a potential O-donor ligand. The C–N couplings of N-heterocycles with aryl halides or arylboronic acids could be readily conducted and exhibited good functional group tolerance with characters of selectivity. These N-arylazoles allow rapid access to several pharmaceutical intermediates and can be easily transformed into a variety of other interesting scaffolds as well.

  这里报告了α-D-半乳糖醛酸水合物（GalA）作为潜在的O-供体配体的首次应用。N-杂环化合物与芳基卤化物或芳基硼酸的C-N偶联可以轻松进行，并且具有良好的官能团容忍性和选择性特征。这些N-芳基唑允许快速获得几种药用中间体，并且也可以轻松转化为各种其他有趣的骨架。
• 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。
• Cp*Rh(<scp>iii</scp>) and Cp*Ir(<scp>iii</scp>)-catalysed redox-neutral C–H arylation with quinone diazides: quick and facile synthesis of arylated phenols
  作者：Shang-Shi Zhang、Chun-Yong Jiang、Jia-Qiang Wu、Xu-Ge Liu、Qingjiang Li、Zhi-Shu Huang、Ding Li、Honggen Wang

  DOI：10.1039/c5cc03187g

  日期：——

  Cp*Rh(iii)- and Cp*Ir(iii)-catalysed direct C–H arylation with quinone diazides provides a facile and redox-neutral access to arylated phenols.

  Cp*Rh（iii）和Cp*Ir（iii）催化的直接C-H芳基化与醌二氮烯的反应提供了一种简便且氧化还原中性的芳基酚合成途径。
• Manganese-catalyzed cross-coupling reactions of nitrogen nucleophiles with aryl halides in water
  作者：Yong-Chua Teo、Fui-Fong Yong、Chai-Yun Poh、Yaw-Kai Yan、Guan-Leong Chua

  DOI：10.1039/b909803h

  日期：——

  A facile and convenient strategy for the assembly of N-arylated heterocycles has been demonstrated using a MnCl2.4H2O/trans-1,2-diaminocyclohexane catalyst and K3PO4 as the base in water.

  已经证明了使用MnCl2.4H2O /反式1,2-二氨基环己烷催化剂和K3PO4作为碱在水中组装N-芳基杂环的简便方法。