| 1420009-50-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• CAS: 1420009-50-2
• 化学式: C₂₆H₃₉NO₃Si
• 分子量: 441.686
• InChiKey: QQIYYUSWUQBCPB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.35
• 重原子数：
  31.0
• 可旋转键数：
  4.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  48.3
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  10-十一碳炔酸 在 4-二甲氨基吡啶 、 tris-(dibenzylideneacetone)dipalladium(0) 、 正丁基锂 、 1,1'-bis(di-tertbutylphosphino)ferrocene 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 三乙胺 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 5.5h， 生成
  参考文献：
  名称：

  A Pd(0)-Mediated Indole (Macro)cyclization Reaction

  摘要：

  Herein we report a systematic study of the Larock indole annulation designed to explore the scope and define the generality of its use in macrocyclization reactions, its use in directly accessing the chloropeptin I versus II DEF ring system as well as key unnatural isomers, its utility for both peptide-derived and more conventional carbon-chain based macrocycles, and its extension to intramolecular cyclizations with formation of common ring sizes. The studies define a powerful method complementary to the Stile or Suzuki cross-coupling reactions for the synthesis of cyclic or macrocyclic ring systems containing an embedded indole, tolerating numerous functional groups and incorporating various (up to 28-membered) ring sizes. As a result of the efforts to expand the usefulness and scope of the reaction, we also disclose a catalytic variant of the reaction, along with a powerful Pd-2(dba)(3)-derived catalyst system, and an examination of the factors impacting reactivity and catalysis.

  DOI：

  10.1021/ja3121394