One-pot highly efficient synthesis of substituted pyrroles and N-bridgehead pyrroles by zinc-catalyzed multicomponent reaction
作者:Xiao-tao Liu、Lu Hao、Min Lin、Li Chen、Zhuang-ping Zhan
DOI:10.1039/c003885g
日期:——
developed for the synthesis of substituted pyrrole derivatives from propargylic acetates, enoxysilanes and primary amines. Various aromatic and aliphatic propargylic acetates participate well in the reaction, providing the propargylation/amination/cycloisomerization products in good yields with complete regioselectivity. The one-pot multicomponent coupling reaction furnishes substituted pyrroles in high
一个方便 锌(II),氯化催化的区域选择性炔丙基化/胺化/环异构化工艺已被开发用于合成取代基 吡咯炔丙基乙酸酯,环氧硅烷和伯胺的衍生物。各种芳族和脂族炔丙基乙酸酯都很好地参与了反应,以高收率提供了炔丙基化/胺化/环异构化产物,并具有完全的区域选择性。一锅多组分偶联反应可避免中间体的分离,从而以高收率提供取代的吡咯。锌(II),氯化充当多功能催化剂,并在一个罐中催化三个机械上不同的过程。所开发的方案已扩展到包含多环片段的N-桥头吡咯的合成。