Synthesis of Polyhalogenated 2-(Phenylamino)pyridines by Thermal Amination Reactions
作者:Siegfried Waldvogel、Andreas Faust、Werner Barkmann、Roland Fröhlich、Oliver Wolff
DOI:10.1055/s-0029-1216642
日期:2009.5
Amination reactions of 2,6-dibromopyridine with a variety of halogenated anilines were achieved thermally when 2,2,6,6-tetramethylpiperidine was employed as an auxiliary base. The solvent-free thermal conversion was superior to palladium-catalyzed transformations of such substrates since no high-molecular-weight byproducts were observed.
以2,2,6,6-四甲基哌啶为辅助碱,2,6-二溴吡啶与多种卤代苯胺发生热胺化反应。无溶剂热转化优于此类底物的钯催化转化,因为没有观察到高分子量副产物。