TMSOTf-Catalyzed [4 + 2] Annulation of Ynamides and β-(2-Aminophenyl)-α,β-ynones for the Synthesis 2-Aminoquinolines
作者:Chaofan Qi、Xiaoxiao Shen、Wozheng Fang、Junbiao Chang、Xiao-Na Wang
DOI:10.1021/acs.orglett.4c00763
日期:——
A metal-free TMSOTf-catalyzed [4 + 2] annulation of ynamides with β-(2-aminophenyl)-α,β-ynones enables the regiospecific and facile assembly of 2-aminoquinoline frameworks. The catalyst TMSOTf presented a remarkable advancement compared to previously reported transition-metal catalysts. A wide range of 3-aryl/alkyl-substituted 2-aminoquinolines were generated in moderate to excellent yields due to
无金属 TMSOTf 催化的 ynamides 与 β-(2-氨基苯基)-α,β-ynones 的 [4 + 2] 环化能够实现 2-氨基喹啉框架的区域特异性和轻松组装。与之前报道的过渡金属催化剂相比,催化剂 TMSOTf 呈现出显着的进步。由于条件温和,可以以中等至优异的产率生成多种 3-芳基/烷基取代的 2-氨基喹啉。