Sequential S<sub>N</sub>Ar Reaction/Suzuki-Miyaura Coupling/C−H Direct Arylations Approach for the Rapid Synthesis of Tetraaryl-Substituted Pyrazoles
作者:Taiki Morita、Daisuke Kobayashi、Keisuke Matsumura、Kohei Johmoto、Hidehiro Uekusa、Shinichiro Fuse、Takashi Takahashi
DOI:10.1002/asia.201500362
日期:2015.8
A rapid synthesis of 1,3,4,5‐tetraaryl‐substituted pyrazoles has been achieved through a sequence of SNAr reaction/Suzuki–Miyaura coupling/Pd‐catalyzed direct arylations that used 3‐iodo‐1H‐pyrazole as a scaffold. Pyrazoles with four different aryl groups were synthesized in a straightforward manner with no extra synthetic steps, such as protection/deprotection or the introduction of activating/directing
通过一系列的S N Ar反应/ Suzuki-Miyaura偶联/ Pd催化的直接芳基化反应(使用3-碘-1 H吡唑),可以快速合成1,3,4,5-四芳基取代的吡唑。脚手架。使用容易获得的底物和试剂,以简单的方式合成具有四个不同芳基的吡唑,无需额外的合成步骤,例如保护/脱保护或引入活化/导向基团。发达的合成方法无需使用手套箱技术即可实现结构多样的多芳基取代吡唑的合成。