3-(2-amino-3-propan-2-ylsulfonylbenzimidazol-5-yl)-N-methylprop-2-ynamide | 211512-99-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: 3-(2-amino-3-propan-2-ylsulfonylbenzimidazol-5-yl)-N-methylprop-2-ynamide
• CAS: 211512-99-1
• 化学式: C₁₄H₁₆N₄O₃S
• 分子量: 320.372
• InChiKey: FZVYHBDXWQXBNG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  116
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  间氟碘苯 、 3-(2-amino-3-propan-2-ylsulfonylbenzimidazol-5-yl)-N-methylprop-2-ynamide 在 哌啶 、 甲酸 、 bis(dibenzylideneacetone)-palladium⁽⁰⁾ 作用下， 以 乙酸乙酯 为溶剂， 生成 (E)-3-[2-Amino-3-(propane-2-sulfonyl)-3H-benzoimidazol-5-yl]-3-(3-fluoro-phenyl)-N-methyl-acrylamide
  参考文献：
  名称：

  Palladium-Catalyzed Hydroarylation of Propiolamides. A Regio- and Stereocontrolled Method for Preparing 3,3-Diarylacrylamides

  摘要：

  A general regio- and stereoselective synthesis of 3,3-diarylacrylamides is reported. Palladium-catalyzed coupling reactions of propiolamides with aryl halides provide arylpropiolamides. A subsequent hydroarylation reaction of these arylpropiolamides with aryl halides, catalytic palladium, an amine base, and formic acid in refluxing ethyl acetate provides 3,3-diarylacrylamides regio- and stereoselectively. The unique stereo- and regiocontrol is presumed to proceed through careful reaction parameters that allow intramolecular coordination of the propiolamide amide functionality to the transient palladium-alkyne complex. Palladium-catalyzed hydroarylation of propiolamides has not been studied; however, preliminary results from related systems suggest that regioselective addition can be achieved. The methodology as a synthesis tool is demonstrated in an efficient route to previously difficult-to-prepare potent, benzimidazole antiviral targets. In addition, the synthesis scope is explored where, by judicious choice of reaction sequence and aryl iodide, either the Z- or E-geometric isomer of a given pair of 3,3-diarylacrylamides is independently prepared.

  DOI：

  10.1021/jo980235h
• 作为产物：
  描述：

  1-(propane-2-sulfonyl)-1H-benzimidazole-2-ylamine 在 N-碘代丁二酰亚胺 、 copper(l) iodide 、 bis(triphenylphosphine) palladium (Il) acetate 、 三乙胺 作用下， 以 溶剂黄146 、 二甲基亚砜 为溶剂， 反应 9.0h， 生成 3-(2-amino-3-propan-2-ylsulfonylbenzimidazol-5-yl)-N-methylprop-2-ynamide
  参考文献：
  名称：

  Palladium-Catalyzed Hydroarylation of Propiolamides. A Regio- and Stereocontrolled Method for Preparing 3,3-Diarylacrylamides

  摘要：

  A general regio- and stereoselective synthesis of 3,3-diarylacrylamides is reported. Palladium-catalyzed coupling reactions of propiolamides with aryl halides provide arylpropiolamides. A subsequent hydroarylation reaction of these arylpropiolamides with aryl halides, catalytic palladium, an amine base, and formic acid in refluxing ethyl acetate provides 3,3-diarylacrylamides regio- and stereoselectively. The unique stereo- and regiocontrol is presumed to proceed through careful reaction parameters that allow intramolecular coordination of the propiolamide amide functionality to the transient palladium-alkyne complex. Palladium-catalyzed hydroarylation of propiolamides has not been studied; however, preliminary results from related systems suggest that regioselective addition can be achieved. The methodology as a synthesis tool is demonstrated in an efficient route to previously difficult-to-prepare potent, benzimidazole antiviral targets. In addition, the synthesis scope is explored where, by judicious choice of reaction sequence and aryl iodide, either the Z- or E-geometric isomer of a given pair of 3,3-diarylacrylamides is independently prepared.

  DOI：

  10.1021/jo980235h