A Sc(OTf)3-catalyzed aza-Friedel–Crafts reaction of electron-rich arenes with isatin-derived ketimines is disclosed, providing biologically interesting 3-amino-3-aryl-2-oxindoles in moderate to good yields with broad substrate scope. This reaction can be easily scaled up, and the Boc protecting group could be readily removed under mild reaction conditions to afford the free amine.
一种由Sc(OTf)3催化的电子富集
芳烃与
异喹啉衍生的酮
亚胺进行的氮杂Friedel-Crafts反应被披露,以中等至良好的产率提供
生物学上有趣的3-
氨基-3-芳基-2-氧
吲哚,具有广泛的底物范围。这种反应可以很容易地扩大规模,且Boc保护基可以在温和的反应条件下轻松去除,以得到自由胺。