Aminoalkoxide-Mediated Formation and Stabilization of Phenylpyridyllithium: Straightforward Access to Phenylpyridine Derivatives
作者:Philippe Gros、Yves Fort
DOI:10.1021/jo026706o
日期:2003.3.1
dimerization or nucleophilic addition encountered with t-BuLi or n-BuLi. The reported selective pyridine ring lithiation of 2-, 3-, and 4-phenylpyridine alpha to nitrogen opens a straightforwardaccess to their derivatives.
Vilsmeier–Haack reactions of α-hydroxyketenedithioacetals: a facile synthesis of substituted pyridines
作者:Ajith Dain Thomas、C.V Asokan
DOI:10.1016/s0040-4039(02)00174-0
日期:2002.3
the Vilsmeier reagent was investigated. The reaction proceeds with acid-catalysed dehydration to afford sulphur substituted 1,3-butadienes, which undergo subsequent iminoalkylations. The intermediate iminium salts formed were successfully transformed into 2-methylsulfanyl substituted 4-aryl pyridines, in the presence of ammonium acetate