Synthesis of Polysubstituted Pyridines via a One-Pot Metal-Free Strategy
摘要:
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.
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.
PROSTAKOV N. S.; OBYNOCHNYJ A.A.; DOROGOV V. V.; ZVOLINSKIJ V. P.; ZAXARO+, XIMIYA GETEROTSIKL. SOEDIN., 1977, HO 6, 814-818
作者:PROSTAKOV N. S.、 OBYNOCHNYJ A.A.、 DOROGOV V. V.、 ZVOLINSKIJ V. P.、 ZAXARO+