Iodine-Catalyzed Diversity-Oriented Synthesis of 3,4-Heterocycle-Fused Coumarins from 4-Aminocoumarins and Aurones in Different Solvent
作者:Xuequan Wang、Zhen Jiang、Chahui Du、Lin Ma、Dan Yue、Changhui Yang、Suyue Duan、Xianfu Shen
DOI:10.1021/acs.joc.4c00496
日期:——
An unprecedented protocol has been developed for the synthesis of 3,4-heterocycle-fused coumarins from 4-aminocoumarins and aurones through iodine-catalyzed cascade reactions. Dihydropyridine-fused coumarin, pyridine-fused coumarin, and pyrrole-fused coumarin derivatives were achieved in good yields with high selectivity when CH3CN, AcOH, and DMSO were used as the solvent, respectively. This protocol
开发了一种前所未有的方案,用于通过碘催化级联反应从 4-氨基香豆素和橙酮合成 3,4-杂环稠合香豆素。当分别使用CH 3 CN、AcOH和DMSO作为溶剂时,二氢吡啶稠合香豆素、吡啶稠合香豆素和吡咯稠合香豆素衍生物均具有良好的产率和高选择性。该方案具有起始原料易得、原子经济性高、环境友好、操作简单等优点。