ethyl 5-(perfluorophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate | 1049013-75-3

• 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: ethyl 5-(perfluorophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
• 英文别名: ethyl-5-(perfluorophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
• CAS: 1049013-75-3
• 化学式: C₁₂H₉F₅N₂O₂
• 分子量: 308.208
• InChiKey: GHRQMYIROABXFB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.34
• 重原子数：
  21.0
• 可旋转键数：
  3.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  50.69
• 氢给体数：
  1.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  2,3,4,5,6-pentafluorobenzaldehyde 2,4,6-triisopropylbenzenesulphonyl hydrazone 、 丙烯酸乙酯 在 三乙胺 作用下， 以 水 为溶剂， 反应 1.0h， 以99%的产率得到ethyl 5-(perfluorophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
  参考文献：
  名称：

  A novel synthesis of 5-perfluorophenyl 4,5-dihydro-1H-pyrazoles in THF or water

  摘要：

  5-Perfluorophenyl 4,5-dihydro-1H-pyrazoles were synthesized from 1,3-dipolar cycloaddition reaction of perfluorobenyl 2,4,6-triisopropyl-benzenesulfonylhydrazone and alpha,beta-unsaturated carbonyl compounds or acrylonitrile in THF or water. It was worthy to note that better results were obtained when water was employed as the solvent, which was considered as an effective, economic and environmentally friendly method to synthesize these pyrazole derivatives. (c) 2007 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jfluchem.2007.06.010

文献信息

• Encapsulating ruthenium in silica using a single source precursor: Differing outcomes for a cycloaddition reaction
  作者：Chandan Kr Barik、Rakesh Ganguly、Felipe Garcia、Weng Kee Leong

  DOI：10.1016/j.ica.2020.119833

  日期：2020.11

  The complex [Ru-2(CO)(4)(mu-O2CCH2OSi(OEt)(3))(2)(PPh3)(2)] was used as a single-source precursor to prepare silica encapsulated ruthenium via hydrolysis followed by calcination. While the silica-encapsulated ruthenium catalyst and the molecular precursor both catalysed the [2 + 1] cycloaddition reaction between alkenes and ethyl diazoacetate to form cyclopropanes, the intermediate hydrolysis product partially directed the reaction towards [2 + 3] cycloaddition to form cyclic five-membered pyrazolines.