作者:Siegfried Waldvogel、Andreas Faust、Oliver Wolff
DOI:10.1055/s-0028-1083268
日期:2009.1
When transition-metal-catalyzed transformations fail, the amination reaction of activated bromo- and chloropyridines can be achieved thermally. The auxiliary base 2,2,6,6-tetramethylpiperidine turned out to be the key for the conversion of highly sterically demanding and acid labile amines.
当过渡金属催化的转化失败时,热诱导下可以实现活化溴吡啶和氯吡啶的胺化反应。辅助碱2,2,6,6-四甲基哌啶被证明是实现高度立体位阻和酸易变胺转化的关键。