Consecutive Cycloaddition/S<sub>N</sub>Ar/Reduction/Cyclization/Oxidation Sequences: A Copper-Catalyzed Multicomponent Synthesis of Fused N-Heterocycles
作者:Feng-Cheng Jia、Cheng Xu、Zhi-Wen Zhou、Qun Cai、Deng-Kui Li、An-Xin Wu
DOI:10.1021/acs.orglett.5b01242
日期:2015.6.5
A highly efficient multicomponent domino protocol has been developed for the synthesis of 5-phenyl-[1,2,3]triazolo[1,5-c]quinazolines from simple and readily available (E)-1-bromo-2-(2-nitrovinyl)benzenes, aldehydes, and sodium azide. This elegant domino process involved consecutive [3 + 2] cycloaddition, copper-catalyzed SNAr, reduction, cyclization, and oxidation sequences. Notably, sodium azide acted as a dual nitrogen source in the construction of this novel fused N-heterocycle.