Synthesis of 2,3-Disubstituted Pyrroles and Pyridines from 3-Halo-1-azaallylic Anions
作者:Wim Aelterman、Norbert De Kimpe、Vladimir Tyvorskii、Oleg Kulinkovich
DOI:10.1021/jo000724t
日期:2001.1.1
A new synthesis of 2,3-disubstituted pyrroles and pyridines is described. The reaction of 3-halo-1-azaallylic carbanions, regiospecifically generated from alpha-halogenated ketimines, with omega-iodoazides led to the regiospecific formation of omega-azido-alpha-haloketimines. Treatment of these functionalized imines with tin(II) chloride afforded halogenated five- and six-membered cyclic imines, which