Multicomponent Reactions for Diverse Synthesis of<i>N</i>-Substituted and NH 1,4-Dihydropyridines
作者:Jieping Wan、Youyi Zhou、Yunyun Liu、Zheng Fang、Chengping Wen
DOI:10.1002/cjoc.201300918
日期:2014.3
The multicomponent reactions of aldehydes, electron deficient alkynes and amines have been successfully performed to yield a number of symmetrical 2,6‐unsubstituted 1,4‐dihydropyridines (1,4‐DHPs). This method has been found generally applicable for the synthesis of both N‐substituted and N‐unsubstituted 1,4‐DHPs by employing secondary amine to activate the alkyne component via enaminoester intermediates
醛,缺乏电子的炔烃和胺的多组分反应已成功进行,得到了许多对称的2,6-未取代的1,4-二氢吡啶(1,4-DHPs)。已经发现该方法通常可用于合成N-取代的和N-未取代的1,4-DHP,方法是使用仲胺通过烯胺酯中间体活化炔烃组分。本方法通过烯胺型活化进行,这不同于采用AcOH作为溶剂的已知方法。