Effective and Variable Functionalization of Pyrazolo[1,5-a]pyridines Involving Palladium-Catalyzed Coupling Reactions
作者:Tarek Aboul-Fadl、Stefan Löber、Peter Gmeiner
DOI:10.1055/s-2000-8215
日期:——
Various 7-substituted pyrazolo[1,5-a]pyridines were synthesized by palladium-mediated cross-coupling reactions. Starting from the corresponding 7-iodo derivatives, incorporation of phenyl, vinyl, ethynyl, cyano, and amino was accomplished. Pyrazolo[1,5-a]pyridine-7-ylzinc iodide could be reacted under Negishi conditions to afford the coupling product 16.
通过钯催化的交叉偶联反应,合成了多种7位取代的吡唑并[1,5-a]吡啶。从相应的7-碘衍生物出发,成功引入了苯基、乙烯基、乙炔基、氰基和氨基。在Negishi条件下,吡唑并[1,5-a]吡啶-7-基锌碘可以反应生成偶联产物16。