1-(2-triisopropylsilanylethynyl)-1H-benzimidazole | 1046136-11-1

• 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: 1-(2-triisopropylsilanylethynyl)-1H-benzimidazole
• 英文别名: 1-((triisopropylsilyl)ethynyl)-1H-benzo[d]imidazole；2-(Benzimidazol-1-yl)ethynyl-tri(propan-2-yl)silane
• CAS: 1046136-11-1
• 化学式: C₁₈H₂₆N₂Si
• 分子量: 298.503
• InChiKey: RDOWKQFJLZSMNC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.06
• 重原子数：
  21
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  17.8
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1-(2-triisopropylsilanylethynyl)-1H-benzimidazole 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 0.5h， 以74%的产率得到1-ethynyl-1H-benzo[d]imidazole
  参考文献：
  名称：

  Triazoles from N-Alkynylheterocycles and Their Coordination to Iridium

  摘要：

  N-alkynylheterocycles (benzimidazole and indazole) are converted to triazoles by click chemistry, and the resulting triazoles react with [IrCl2Cp*](2). The benzimidazole-triazole coordinates in a monodentate fashion through the benzimidazole, whereas the indazole-triazole is bidentate through coordination of both heterocycles. Reaction of the benzimidazole-triazole with methyliodide gives a benzimidazolium salt that deprotonates on coordination to afford a rare example of a bidentate NHC-triazole.

  DOI：

  10.1021/om201157g
• 作为产物：
  描述：

  苯并咪唑 、 (2-溴乙炔基)三异丙基硅烷 在 copper(l) iodide 、 caesium carbonate 作用下， 以 1,4-二氧六环 为溶剂， 反应 18.0h， 以71%的产率得到1-(2-triisopropylsilanylethynyl)-1H-benzimidazole
  参考文献：
  名称：

  Coupling Reactions of Bromoalkynes with Imidazoles Mediated by Copper Salts: Synthesis of Novel N-Alkynylimidazoles

  摘要：

  A cross-coupling reaction of imidazoles with bromoalkynes in the presence of a catalytic amount of CuI is reported. This protocol allows an access to novel N-(1-alkynyl)imidazoles in moderate to good yields.

  DOI：

  10.1021/jo801118q

文献信息

• Cu-Catalyzed N<i>-</i>Alkynylation of Imidazoles, Benzimidazoles, Indazoles, and Pyrazoles Using PEG as Solvent Medium
  作者：Glenn A. Burley、David L. Davies、Gerry A. Griffith、Michael Lee、Kuldip Singh

  DOI：10.1021/jo902466f

  日期：2010.2.5

  A facile and efficient Cu(I)-catalyzed cross-coupling method is reported for the preparation of N-alkynyl or N-bromoalkenyl heteroarenes from bromoalkynes. Generally superior yields and functional group tolerance were obtained with microwave (MW) irradiation using imidazole, benzimidazole, pyrazole, and indazole substrates and poly(ethylene glycol) 400 (PEG400) as an additive. We speculate that PEG400 acts as both a Cu(I)-stabilizing ligand as well as a phase transfer solvent.
• Lithiation and functionalization of 1-alkynylimidazoles at the 2-position
  作者：Christophe Laroche、Sean M. Kerwin

  DOI：10.1016/j.tetlet.2009.06.133

  日期：2009.9

  Functionalization reactions of 1-alkynylimidazoles involving the formation of their 2-lithio derivatives followed by addition of various electrophiles are presented. This allows access to previously unreported 1,2-dialkynylimidazoles via 1-alkynyl-2-iodoimidazoles. The use of an aldehyde or sulfonimine electrophiles allows the direct formation of bicyclic ring systems. (C) 2009 Elsevier Ltd. All rights reserved.