Iron‐Catalyzed Radical Relay Enabling the Modular Synthesis of Fused Pyridines from Alkyne‐Tethered Oximes and Alkenes
作者:Fei Du、Shi‐Jun Li、Kun Jiang、Rong Zeng、Xi‐Chun Pan、Yu Lan、Ying‐Chun Chen、Ye Wei
DOI:10.1002/anie.202010752
日期:2020.12.21
designed a new class of alkyne‐tethered oximes and applied them in an unprecedented iron‐catalyzed radical relay protocol for the rapid assembly of a wide array of structurally new and interesting fused pyridines. This method shows broad substrate scope and good functional‐group tolerance and enabled the synthesis of several biologically active molecules. Furthermore, the fused pyridines could be diversely
我们合理地设计了一类新的炔烃肟,并将其应用于前所未有的铁催化自由基中继方案,以快速组装各种结构新颖且有趣的稠合吡啶。该方法显示出广泛的底物范围和良好的官能团耐受性,并能够合成多种生物活性分子。此外,稠合吡啶可以通过各种简单的转化进行多种功能化,例如环化、C-H 烷基化和点击反应。DFT 计算研究表明反应涉及级联 1,5-氢原子转移、5-外-挖掘自由基加成和环化过程。此外,初步生物学研究表明,一些融合吡啶通过在脂多糖诱导的模型中恢复巨噬细胞的炎症稳态失衡而表现出良好的抗炎活性。