Me<sub>3</sub>SiCl-Promoted Three-Component Coupling Reaction of a Functionalized Enamine, an Acetal, and an Alkyne: An Unprecedented Approach to the Synthesis of Tetrasubstituted Pyridines via a [3 + 2 + 1] Intermolecular Cyclization
作者:Toshiaki Sasada、Norio Sakai、Takeo Konakahara
DOI:10.1021/jo801090h
日期:2008.9.1
We have identified a Me3SiCl-mediated three-component coupling reaction of a functionalized enamine, N,N-dimethylformamide diethyl acetal, and an internal alkyne having an electron-withdrawing group that produces 2,3,4,5-tetrasubstituted pyridine derivatives in good to excellent yields via a single-step reaction.
我们已经确定了Me3SiCl介导的功能化烯胺,N,N-二甲基甲酰胺二乙基乙缩醛和具有吸电子基团的内部炔烃的三组分偶联反应,该产物可良好地产生2,3,4,5-四取代的吡啶衍生物通过一步反应即可获得优异的收率。