2-(3-ethoxy-5-methyl-1H-pyrazol-1-yl)pyridine | 1223597-12-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 2-(3-ethoxy-5-methyl-1H-pyrazol-1-yl)pyridine
• 英文别名: 2-(3-Ethoxy-5-methylpyrazol-1-yl)pyridine；2-(3-ethoxy-5-methylpyrazol-1-yl)pyridine
• CAS: 1223597-12-3
• 化学式: C₁₁H₁₃N₃O
• 分子量: 203.244
• InChiKey: UUFOUDBDPLLLMW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  39.9
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(3-ethoxy-5-methyl-1H-pyrazol-1-yl)pyridine 在 三溴化硼 、 水 作用下， 以 二氯甲烷 、 乙醇 为溶剂， 反应 48.0h， 以45%的产率得到5-methyl-1-(pyridin-2-yl)-1H-pyrazol-3(2H)-one
  参考文献：
  名称：

  N-arylation of 3-alkoxypyrazoles, the case of the pyridines

  摘要：

  In the course of a research program focused on the preparation of libraries of new chemical entities derived from 3-alkoxypyrazoles, we studied their N-pyridylation using 2, 3 or 4-bromopyridines This was achieved using Cristau and Taillefer copper-catalyzed arylation method and mostly led to the 3-alkoxy-1H-pyrazol-1-yl pyridine isomer along with lesser amount of the alternative 5-alkoxy-1H-pyrazol-1-yl pyridine The structures of these isomers were often established via their chemical tansformations and sometimes recourse to unambiguous synthetic routes for comparison purposes The alternative use of 2-fluoropyridine-based arylation was also investigated and lifted some of the limitations encountered in the course of this study (C) 2010 Elsevier Ltd All rights reserved

  DOI：

  10.1016/j.tet.2010.02.032
• 作为产物：
  描述：

  2-氟吡啶 、 3-乙氧基-5-甲基-1H-吡唑 在 caesium carbonate 作用下， 反应 2.0h， 以56%的产率得到2-(3-ethoxy-5-methyl-1H-pyrazol-1-yl)pyridine
  参考文献：
  名称：

  N-arylation of 3-alkoxypyrazoles, the case of the pyridines

  摘要：

  In the course of a research program focused on the preparation of libraries of new chemical entities derived from 3-alkoxypyrazoles, we studied their N-pyridylation using 2, 3 or 4-bromopyridines This was achieved using Cristau and Taillefer copper-catalyzed arylation method and mostly led to the 3-alkoxy-1H-pyrazol-1-yl pyridine isomer along with lesser amount of the alternative 5-alkoxy-1H-pyrazol-1-yl pyridine The structures of these isomers were often established via their chemical tansformations and sometimes recourse to unambiguous synthetic routes for comparison purposes The alternative use of 2-fluoropyridine-based arylation was also investigated and lifted some of the limitations encountered in the course of this study (C) 2010 Elsevier Ltd All rights reserved

  DOI：

  10.1016/j.tet.2010.02.032

文献信息

• N-arylation of 3-alkoxypyrazoles, the case of the pyridines
  作者：Sandrine Guillou、Frédéric J. Bonhomme、Di Betina Chahine、Olivier Nesme、Yves L. Janin

  DOI：10.1016/j.tet.2010.02.032

  日期：2010.4

  In the course of a research program focused on the preparation of libraries of new chemical entities derived from 3-alkoxypyrazoles, we studied their N-pyridylation using 2, 3 or 4-bromopyridines This was achieved using Cristau and Taillefer copper-catalyzed arylation method and mostly led to the 3-alkoxy-1H-pyrazol-1-yl pyridine isomer along with lesser amount of the alternative 5-alkoxy-1H-pyrazol-1-yl pyridine The structures of these isomers were often established via their chemical tansformations and sometimes recourse to unambiguous synthetic routes for comparison purposes The alternative use of 2-fluoropyridine-based arylation was also investigated and lifted some of the limitations encountered in the course of this study (C) 2010 Elsevier Ltd All rights reserved