A facile synthesis of tetrahydroimidazo[1,2-a]pyridines and tetrahydrobenzo[b]imidazo[1,2,3-ij][1,8]naphthyridines through NHC-catalyzed cascade annulations
作者:Changsheng Yao、Weihui Jiao、Zhaoxin Xiao、Yuanwei Xie、Tuanjie Li、Xiangshan Wang、Rui Liu、Chenxia Yu
DOI:10.1039/c3ra41935e
日期:——
A new efficient approach for the synthesis of tetrahydroimidazo[1,2-a]pyridines and tetrahydrobenzo[b]imidazo[1,2,3-ij][1,8]naphthyridines with biological significance was successfully developed through a NHC-catalyzed cascade C–C bond and C–N bond formation process. This new alternative approach for the assembly of these multi-functionalized nitrogen bridgehead-fused heterocycles features mild conditions
通过NHC催化的级联反应成功开发了一种新的高效合成四氢咪唑并[1,2- a ]吡啶和四氢苯并[ b ]咪唑并[1,2,3- ij ] [1,8]萘啶的新方法C–C键和C–N键的形成过程。组装这些多功能氮桥头稠合杂环的这种新的替代方法具有温和的条件,中等至高收率和操作简便性。