作者:Hongbo Wei、Yun Li、Ke Xiao、Bin Cheng、Huifei Wang、Lin Hu、Hongbin Zhai
DOI:10.1021/acs.orglett.5b02903
日期:2015.12.18
An efficient strategy for the one-pot synthesis of polysubstituted pyridines via a cascade reaction from aldehydes, phosphorus ylides, and propargyl azide is reported. The reaction sequence involves a Wittig reaction, a Staudinger reaction, an aza-Wittig reaction, a 6 pi-3-azatriene electrocyclization, and a 1,3-H shift. This protocol provides quick access to the polysubstituted pyridines from readily available substrates in good to excellent yields.