An expedient approach was developed to construct the 11H-indolo[3,2-c]quinoline scaffold starting from acyclic alkyne substrates. The five- and six-membered nitrogen-containing rings in the tetracyclic skeleton were elaborated efficiently by gold(III)-catalyzed 5-endo-dig cyclization and Hendrickson reagent promoted regioselective 6-endo cyclization.
我们开发了一种便捷的方法,从无环烯烃底物开始构建 11H-
吲哚并[3,2-c]
喹啉支架。通过
金(III)催化的 5-endo-dig 环化和亨德里克森试剂促进的区域选择性 6-endo 环化,四环骨架中的五元和六元含氮环得到了有效的阐述。