5-三氟甲基-3-(4-甲氧基苯基)-1-苯基吡唑 | 1024599-68-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 中文名称: 5-三氟甲基-3-(4-甲氧基苯基)-1-苯基吡唑
• 英文名称: 3-(4-methoxyphenyl)-1-phenyl-5-(trifluoromethyl)-1H-pyrazole
• 英文别名: 3-(4-Methoxyphenyl)-1-phenyl-5-(trifluoromethyl)pyrazole
• CAS: 1024599-68-5
• 化学式: C₁₇H₁₃F₃N₂O
• 分子量: 318.298
• InChiKey: UVVRFIRZOGDCRT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  27
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  苯肼 在 正丁基锂 、 溶剂黄146 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 2.83h， 生成 5-三氟甲基-3-(4-甲氧基苯基)-1-苯基吡唑
  参考文献：
  名称：

  通过二价阴离子环化有效地一锅合成5-全氟烷基吡唑†

  摘要：

  已经开发了一种高度选择性和有效的合成5-三氟甲基化和5-全氟烷基化吡唑的方法，该方法依赖于肼二价阴离子与全氟羧酸乙酯的环化。所制备的吡唑被评估为碱性磷酸酶的潜在抑制剂，即人体组织非特异性碱性磷酸酶（h-TNAP）和组织特异性肠道碱性磷酸酶（IAP）。大多数吡唑衍生物比h-TNAP更明显地抑制h-IAP，并且对核苷酸焦磷酸酶/磷酸二酯酶的影响较小。因此，该化合物显示为h-IAP的潜在选择性抑制剂。

  DOI：

  10.1039/c5ob01151e

文献信息

• Regioselective Synthesis of 5-Trifluoromethylpyrazoles by [3 + 2] Cycloaddition of Nitrile Imines and 2-Bromo-3,3,3-trifluoropropene
  作者：Hao Zeng、Xiaojie Fang、Zhiyi Yang、Chuanle Zhu、Huanfeng Jiang

  DOI：10.1021/acs.joc.0c02765

  日期：2021.2.5

  A general and practical method for the synthesis of 5-trifluoromethylpyrazoles is reported that occurs by the coupling of hydrazonyl chlorides with environmentally friendly and large-tonnage industrial feedstock 2-bromo-3,3,3-trifluoropropene (BTP). This exclusively regioselective [3 + 2] cycloaddition of nitrile imines and with BTP is catalyst-free and operationally simple and features mild conditions

  据报道，通过将酰氯与环境友好的大吨位工业原料2-溴-3,3,3-三氟丙烯（BTP）偶合，可以合成5-三氟甲基吡唑的通用方法。腈亚胺和BTP的这种唯一的区域选择性[3 + 2]环加成反应无催化剂，操作简单，具有温和的条件，高收率，可克级缩放，广泛的底物范围和有价值的官能团耐受性。重要的是，我们的方法已用于合成鞘氨醇1-磷酸受体活性激动剂的关键中间体。
• Selective, Metal-Free Approach to 3- or 5-CF₃-Pyrazoles: Solvent Switchable Reaction of CF₃-Ynones with Hydrazines
  作者：Vasiliy M. Muzalevskiy、Alexander Yu. Rulev、Alexey R. Romanov、Evgeniy V. Kondrashov、Igor A. Ushakov、Vyacheslav A. Chertkov、Valentine G. Nenajdenko

  DOI：10.1021/acs.joc.7b00774

  日期：2017.7.21

  A detailed study of the reaction of trifluoroacetylated acetylenes and aryl (alkyl) hydrazines was performed, aimed to the regioselective synthesis of 3- or 5-trifluoromethylated pyrazoles. It was found that the regioselectivity of reaction depends dramatically on the solvent nature. Highly polar protic solvents (hexafluoroisopropanol) favor the formation of 3-trifluoromethylpyrazoles. In contrast

  对三氟乙酰化乙炔与芳基（烷基）肼的反应进行了详细的研究，目的在于区域选择性合成3-或5-三氟甲基化的吡唑。发现反应的区域选择性极大地取决于溶剂性质。高极性质子溶剂（六氟异丙醇）有利于3-三氟甲基吡唑的形成。相反，当反应在极性非质子溶剂（DMSO）中进行时，优先观察到它们的5-CF 3-取代的异构体的形成。或者，3-CF 3的区域选择性组装取代的吡唑可以通过两步一锅法进行。在酸性催化剂存在下三氟甲基化的炔酮与芳基（烷基）肼的反应导致形成相应的。后者可以通过用碱处理平滑地转化为3-CF 3-吡唑。该溶剂可切换程序用于制备重要药物，如Celebrex和SC-560以及其以克为单位的异构体。讨论了可能的反应机理。
• Improved Regioselectivity in Pyrazole Formation through the Use of Fluorinated Alcohols as Solvents: Synthesis and Biological Activity of Fluorinated Tebufenpyrad Analogs
  作者：Santos Fustero、Raquel Román、Juan F. Sanz-Cervera、Antonio Simón-Fuentes、Ana C. Cuñat、Salvador Villanova、Marcelo Murguía

  DOI：10.1021/jo800251g

  日期：2008.5.1

  The preparation of N-methylpyrazoles is usually accomplished through reaction of a suitable 1,3-diketone with methylhydrazine in ethanol as the solvent. This strategy, however, leads to the formation of regioisomeric mixtures of N-methylpyrazoles, which sometimes are difficult to separate. We have determined that the use of fluorinated alcohols such as 2,2,2-trifluoroethanol (TFE) and 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as solvents dramatically increases the regioselectivity in the pyrazole formation, and we have used this modification in a straightforward synthesis of fluorinated analogs of Tebufenpyrad with acaricide activity.
• New strategy for the regioselective synthesis of 1-phenyl-3-trifluoromethyl-1H-pyrazoles
  作者：Nilo Zanatta、Simone S. Amaral、Josiane M. dos Santos、Andréia M.P.W. da Silva、Juliana M.F.M. Schneider、Liana da S. Fernandes、Helio G. Bonacorso、Marcos A.P. Martins

  DOI：10.1016/j.tetlet.2013.05.103

  日期：2013.7

  A regioselective synthesis of 3-trifluoromethyl-1-phenyl-1H-pyrazoles (1,3-isomers) as well as their 1,5-isomers (5-trifluoromethyl-1-phenyl-1H-pyrazoles), is described. The 1,3-isomers were obtained from the reaction of 4-alkoxy-1,1,1-trifluoroalk-3-en-2-ones with arylhydrazones followed by deprotective hydrolysis while the 1,5-isomer was obtained by direct cyclocondensation of 4-alkoxy-1,1,1-trifluoroalk-3-en-2-ones with phenylhydrazine. An unequivocal assignment of the 1,3- and 1,5-isomers of the pyrazole products is given. (C) 2013 Elsevier Ltd. All rights reserved.
• Efficient one-pot synthesis of 5-perfluoroalkylpyrazoles by cyclization of hydrazone dianions
  作者：Thang Ngoc Ngo、Syeda Abida Ejaz、Tran Quang Hung、Tuan Thanh Dang、Jamshed Iqbal、Joanna Lecka、Jean Sévigny、Peter Langer

  DOI：10.1039/c5ob01151e

  日期：——

  A highly selective and efficient method for the synthesis of 5-trifluoromethylated and 5-perfluoroalkylated pyrazoles has been developed which relies on the cyclization of hydrazine dianions with ethyl perfluorocarboxylates. The pyrazoles prepared were evaluated as potential inhibitors of alkaline phosphatases, namely human tissue non-specific alkaline phosphatase (h-TNAP) and tissue specific intestinal

  已经开发了一种高度选择性和有效的合成5-三氟甲基化和5-全氟烷基化吡唑的方法，该方法依赖于肼二价阴离子与全氟羧酸乙酯的环化。所制备的吡唑被评估为碱性磷酸酶的潜在抑制剂，即人体组织非特异性碱性磷酸酶（h-TNAP）和组织特异性肠道碱性磷酸酶（IAP）。大多数吡唑衍生物比h-TNAP更明显地抑制h-IAP，并且对核苷酸焦磷酸酶/磷酸二酯酶的影响较小。因此，该化合物显示为h-IAP的潜在选择性抑制剂。