Synthesis of Eight‐Membered Nitrogen Heterocycles via a Heterogeneous PtI
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‐Catalyzed Cascade Cycloaddition Reaction of δ‐Aminoalkynes with Electron‐Deficient Alkynes
作者:Xinhong Li、Songmeng Wang、Hongkai Wang、Weilin Wang、Lingyan Liu、Weixing Chang、Jing Li
DOI:10.1002/adsc.201901644
日期:2020.4.8
cascade reaction of δ‐aminoalkynes was developed for the synthesis of various eight‐membered nitrogen heterocycles in excellent yields. The reaction proceeds via a hydration of δ‐aminoalkynes and subsequent intramolecular cyclization and intermolecular addition as well as ring‐expansion cascade reaction with another electron‐deficient alkynes. This method has the advantages of simple operation and mild