Nickel-Catalyzed Tandem Cyclization of 1,6-Diynes with Indolines/Indoles through Dual C–H Bond Activation
作者:Suresh Kumar Yadav、Masilamani Jeganmohan
DOI:10.1021/acs.joc.3c01463
日期:2023.10.20
A nickel-catalyzed site-selective tandem cyclization of 1,6-diynes with substituted indolines or indoles through consecutive dual C–H bond activation is described. In the reaction, substituted fused indole and carbazole derivatives were observed in good to excellent yields, in which three consecutive C–C bonds formed in one pot. Later, in the presence of DDQ, the aromatization of the indoline derivative
描述了通过连续双 C-H 键活化,镍催化的 1,6-二炔与取代的二氢吲哚或吲哚的位点选择性串联环化。在该反应中,观察到取代的稠合吲哚和咔唑衍生物具有良好至优异的产率,其中三个连续的 C-C 键在一锅中形成。随后,在DDQ存在下,二氢吲哚衍生物芳构化转化为吲哚衍生物。提出了一种可能的反应机制,涉及双 C-H 键激活作为关键步骤来解释当前的反应。