Library-directed Solution- and Solid-phase Synthesis of 2,4-Disubstituted Pyridines: One-pot Approach through 6 π-Azaelectrocyclization
作者:Taku Sakaguchi、Toyoharu Kobayashi、Sho Hatano、Hiroshi Tsuchikawa、Koichi Fukase、Katsunori Tanaka、Shigeo Katsumura
DOI:10.1002/asia.200900146
日期:2009.10.5
for the synthesis of 2,4‐disubstituted pyridines has been successfully established. The method proceeds through a 6π‐azaelectrocyclization‐aromatization sequence. Using this method, a wide variety of pyridine structures substituted at the 2‐position have been rapidly constructed from vinyl stannanes, vinyl iodide, sulfonamide, and a palladium catalyst. The method was further applied to the solid‐phase
已经成功地建立了一种有效的一锅合成方法,用于合成2,4-二取代的吡啶。该方法通过6π-氮杂电环化-芳香化序列进行。使用这种方法,已经迅速从乙烯基锡烷,乙烯基碘,磺酰胺和钯催化剂构建了在2位取代的吡啶结构。该方法进一步应用于固相合成,其中使用“无痕”磺酰胺连接剂可以快速制备少量的高纯度吡啶类化合物,而无需进行色谱分离。