1,3-二苯基-4-乙基-5-(4-甲氧基苯基)-1H-吡唑 | 289725-89-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 中文名称: 1,3-二苯基-4-乙基-5-(4-甲氧基苯基)-1H-吡唑
• 英文名称: 1,3-diphenyl-4-ethyl-5-(4'-methoxyphenyl)-1H-pyrazole
• 英文别名: 4-ethyl-5-(4-methoxyphenyl)-1,3-diphenyl-1H-pyrazole；1,3-Diphenyl-4-ethyl-5-(4-methoxyphenyl)-1H-pyrazole；4-ethyl-5-(4-methoxyphenyl)-1,3-diphenylpyrazole
• CAS: 289725-89-9
• 化学式: C₂₄H₂₂N₂O
• 分子量: 354.451
• InChiKey: QYRFIGROWNTOHB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6
• 重原子数：
  27
• 可旋转键数：
  5
• 环数：
  4.0
• 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：
  2

反应信息

• 作为反应物：
  描述：

  1,3-二苯基-4-乙基-5-(4-甲氧基苯基)-1H-吡唑 在 三溴化硼 作用下， 以 二氯甲烷 为溶剂， 反应 20.0h， 生成 4-ethyl-5-(4-hydroxyphenyl)-1,3-diphenyl-1H-pyrazole
  参考文献：
  名称：

  1,3,5-三芳基-4-烷基吡唑的区域选择性合成：雌激素受体的新型配体。

  摘要：

  [反应：参见结构]已经开发了4-烷基-1,3,5-三芳基吡唑的区域选择性合成，用于制备不对称取代的目标系统，作为雌激素受体的配体。

  DOI：

  10.1021/ol0062650
• 作为产物：
  描述：

  (E)-3-(4-甲氧基苯基)-1-苯基-丙-2-烯-1-酮 在 manganese(IV) oxide 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 二氯甲烷 、 二甲基亚砜 、 Petroleum ether 为溶剂， 反应 131.4h， 生成 1,3-二苯基-4-乙基-5-(4-甲氧基苯基)-1H-吡唑
  参考文献：
  名称：

  1,3,5-三芳基-4-烷基吡唑的区域选择性合成：雌激素受体的新型配体。

  摘要：

  [反应：参见结构]已经开发了4-烷基-1,3,5-三芳基吡唑的区域选择性合成，用于制备不对称取代的目标系统，作为雌激素受体的配体。

  DOI：

  10.1021/ol0062650

文献信息

• Regioselective Synthesis of 1-Aryl-3,4-substituted/annulated-5-(methylthio)pyrazoles and 1-Aryl-3-(methylthio)-4,5-substituted/annulated Pyrazoles
  作者：S. Peruncheralathan、T. A. Khan、H. Ila、H. Junjappa

  DOI：10.1021/jo051771u

  日期：2005.11.1

  Highly efficient and regioselective synthesis of 1-aryl-3,4-substituted/annulated-5-(methylthio)-pyrazoles and 1-aryl-3-(methylthio)-4,5-substituted/annulated pyrazoles has been reported via cyclocondensation of arylhydrazines with either alpha-oxoketene dithioacetals or beta-oxodithioesters.
• Cyclocondensation of Arylhydrazines with 1,3-Bis(het)arylmonothio-1,3-diketones and 1,3-Bis(het)aryl-3-(methylthio)-2-propenones: Synthesis of 1-Aryl-3,5-bis(het)arylpyrazoles with Complementary Regioselectivity
  作者：S. Vijay Kumar、Santosh K. Yadav、B. Raghava、B. Saraiah、H. Ila、K. S. Rangappa、Arpan Hazra

  DOI：10.1021/jo400599e

  日期：2013.5.17

  Two efficient highly regioselective routes for the synthesis of unsymmetrically substituted 1-aryl-3,5-bis(het)arylpyrazoles with complementary regioselectivity starting from active methylene ketones have been reported. In the first protocol, the newly synthesized 1,3-bis(het)aryl-monothio-1,3-diketone precursors (prepared by condensation of active methylene ketones with het(aryl) dithioesters in the presence of sodium hydride) were reacted with arylhydrazines in refluxing ethanol under neutral conditions, furnishing 1-aryl-3,5-bis(het)arylpyrazoles 7, in which the het(aryl) moiety attached to the thiocarbonyl group of monothio-1,3-diketones is installed at the 3-position. In the second method, the corresponding 3-(methylthio)-1,3-bis(het)aryl-2-propenones (prepared in situ by base-induced alkylation of 1,3-monothiodiketones) were condensed with arylhydrazines in the presence of potassium tert-butoxide in. refluxing tert-butyl alcohol, yielding 1-aryl-3,5-bis(het)arylpyrazoles 9 with complementary regioselectivity (method A). The efficiency of this protocol was further improved by developing a one-pot, three-component procedure for the synthesis of pyrazoles 9, directly from active methylene ketones, by reacting in situ generated 3-(methylthio)-1,3-bis(het)aryl-2-propenones with arylhydrazines in the presence of sodium hydride (instead of potassium tert-butoxide as base). The structures and regiochemistry of newly synthesized pyrazoles were confirmed from their spectral and analytical data along with X-ray crystallographic data of three pairs of regioisomers.