异喹啉
化学
三环
喹啉
分子间力
组合化学
戒指(化学)
催化作用
级联反应
自由基环化
立体化学
分子
有机化学
作者
Gu‐Cheng He,Ting-Ting Song,Xiang‐Xin Zhang,Yan Liu,Xiaoyu Wang,Boshun Wan,Shiyu Guo,Qing‐An Chen
出处
期刊:Chem catalysis
[Elsevier]
日期:2023-11-01
卷期号:3 (11): 100793-100793
被引量:1
标识
DOI:10.1016/j.checat.2023.100793
摘要
Pyridines and quinolines are prevalent aza-arene motifs existing in drugs and natural products. It is of great interest to develop a more step- and atom-economy strategy for the construction of quinolines from more accessible pyridines. Herein, a visible-light-induced intermolecular cascade cyclization is developed for the coupling of halopyridies with diynes or dienes to construct tricyclic aza-arenes. Mechanistic studies indicate that the reaction processes include pyridyl radical generation, radical cascade addition, and cyclization processes. A series of fused-ring aza-arenes, such as quinoline, isoquinoline, and 5,6,7,8-tetrahydroquinoline, could be obtained via this protocol. Scale-up reaction and further transformations demonstrate the synthetic utility of this approach.
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