5-Iodo-1-(tetrahydro-pyran-2-yl)-1H-pyrazole-3,4-dicarboxylic acid diethyl ester | 190263-23-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 5-Iodo-1-(tetrahydro-pyran-2-yl)-1H-pyrazole-3,4-dicarboxylic acid diethyl ester
• 英文别名: diethyl 5-iodo-1-(oxan-2-yl)pyrazole-3,4-dicarboxylate
• CAS: 190263-23-1
• 化学式: C₁₄H₁₉IN₂O₅
• 分子量: 422.22
• InChiKey: ZVLORVMQODOMHS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.54
• 重原子数：
  22.0
• 可旋转键数：
  5.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  79.65
• 氢给体数：
  0.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  5-Iodo-1-(tetrahydro-pyran-2-yl)-1H-pyrazole-3,4-dicarboxylic acid diethyl ester 在 三正丁胺 、 三苯胂 、 bis(dibenzylideneacetone)-palladium⁽⁰⁾ 、 3-tertbutyldiphenylsilyloxy-2-hydroxymethyl-2,3-dihydrofuran 作用下， 以 乙腈 为溶剂， 反应 20.0h， 以69%的产率得到1-(Tetrahydro-pyran-2-yl)-1H-pyrazole-3,4-dicarboxylic acid diethyl ester
  参考文献：
  名称：

  4-Substituted-5(3)-carbamoyl-3(5)-(2-deoxy-β-D-ribofuranosyl)pyrazoles. Application of Palladium Catalyzed Glycal Coupling Methodology to the Synthesis of Pyrazofurin Analogs

  摘要：

  Analogs of the C-nucleoside pyrazofurin were prepared in 7-9 steps using a key Pd(0)-catalyzed coupling reaction between protected iodopyrazoles 6a and 6b and glycal 8 to form the glycosyl bond. Conditions for this reaction were improved from those previously described for related reactions in order to maximize product yields and eliminate the need for triphenylarsine.

  DOI：

  10.1080/07328319708001352
• 作为产物：
  描述：

  1H-吡唑-3,4-二羧酸二乙酯 在 N-碘代丁二酰亚胺 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 四氯化碳 、 N,N-二甲基甲酰胺 为溶剂， 反应 7.5h， 生成 5-Iodo-1-(tetrahydro-pyran-2-yl)-1H-pyrazole-3,4-dicarboxylic acid diethyl ester
  参考文献：
  名称：

  4-Substituted-5(3)-carbamoyl-3(5)-(2-deoxy-β-D-ribofuranosyl)pyrazoles. Application of Palladium Catalyzed Glycal Coupling Methodology to the Synthesis of Pyrazofurin Analogs

  摘要：

  Analogs of the C-nucleoside pyrazofurin were prepared in 7-9 steps using a key Pd(0)-catalyzed coupling reaction between protected iodopyrazoles 6a and 6b and glycal 8 to form the glycosyl bond. Conditions for this reaction were improved from those previously described for related reactions in order to maximize product yields and eliminate the need for triphenylarsine.

  DOI：

  10.1080/07328319708001352