(3S)-3-(5-bromo-1H-indol-3-yl)-3-phenylpropanal | 1188293-09-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: (3S)-3-(5-bromo-1H-indol-3-yl)-3-phenylpropanal
• CAS: 1188293-09-5
• 化学式: C₁₇H₁₄BrNO
• 分子量: 328.208
• InChiKey: UJRQVADNRSEOPX-AWEZNQCLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  32.9
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  5-溴吲哚 、 肉桂醛 在 (2S)-2-[二苯基[(三甲基硅酯)氧基]甲基]-吡咯烷 、 三乙胺 作用下， 以 甲基叔丁基醚 为溶剂， 反应 36.0h， 以81%的产率得到(3S)-3-(5-bromo-1H-indol-3-yl)-3-phenylpropanal
  参考文献：
  名称：

  α，β-不饱和醛与吲哚不对称Friedel-Crafts烷基化的有效对映选择性方法

  摘要：

  Abstractmagnified imageThe Lewis base‐Lewis base bifunctional catalytic system has been developed and successfully applied to the asymmetric Friedel–Crafts alkylation of indoles with α,β‐unsaturated aldehydes. The reactions are promoted by chiral diphenylprolinol trimethylsilyl ether in the presence of triethylamine. By this protocol, optically active 3‐substituted indoles can be obtained in an organocatalytic process that is free of Lewis or protic acid in high yields with up to 98% ee. Besides, this reaction could be carried out on a gram scale without any loss in the enantioselectivity.

  DOI：

  10.1002/adsc.200800710

文献信息

• Enantioselective Friedel-Crafts reaction between indoles and α,β-unsaturated aldehydes catalyzed by recyclable α,α-diarylprolinol derived chiral ionic liquids
  作者：Deepa、Mohd. Jubair Aalam、Pramod Kumar、Surendra Singh

  DOI：10.1016/j.tetlet.2023.154343

  日期：2023.2

  Imidazolium-based chiral ionic liquid containing α,α-diaryl-(S)-prolinol trimethylsilyl ether acts as an efficient and reusable organocatalyst for the enantioselective Friedel-Crafts reaction between indoles and α, β-unsaturated aldehydes. 3-Alkylated indoles were obtained in 62–89 % yields with 47–88 % enantiomeric excesses using α,α-diphenyl-(S)-prolinol trimethylsilyl ether having hexafluorophosphate

  含α,α-二芳基-( S )-脯氨醇三甲基甲硅烷基醚的咪唑基手性离子液体可作为一种高效且可重复使用的有机催化剂，用于吲哚与α, β-不饱和醛之间的对映选择性 Friedel-Crafts 反应。使用具有六氟磷酸根阴离子 [PF 6 ] - ( 20 mol %) 和三乙胺 (40 mol%) 在 25 °C 下作为 1,4-二恶烷中的基础添加剂。具有六氟磷酸阴离子的α,α-二苯基-( S )-脯氨醇三甲基甲硅烷基醚[PF 6] -被回收并重复用于 FC 反应多达七次循环，具有一致的对映选择性，但在第三次循环后观察到产品收率的相当大的损失。可能的构象异构体（亚胺中间体）的能量通过 DFT 计算。
• An Efficient Enantioselective Method for Asymmetric Friedel-Crafts Alkylation of Indoles with α,β-Unsaturated Aldehydes
  作者：Liang Hong、Lei Wang、Chao Chen、Bangzhi Zhang、Rui Wang

  DOI：10.1002/adsc.200800710

  日期：2009.3

  Abstractmagnified imageThe Lewis base‐Lewis base bifunctional catalytic system has been developed and successfully applied to the asymmetric Friedel–Crafts alkylation of indoles with α,β‐unsaturated aldehydes. The reactions are promoted by chiral diphenylprolinol trimethylsilyl ether in the presence of triethylamine. By this protocol, optically active 3‐substituted indoles can be obtained in an organocatalytic process that is free of Lewis or protic acid in high yields with up to 98% ee. Besides, this reaction could be carried out on a gram scale without any loss in the enantioselectivity.