A highly efficient synthesis of 4-benzylpyridines was developed via Pd-catalyzed C(sp3)–H arylation between 4-picoline and aryl halides. It was found that the best yields were achieved with a simple Pd(PPh3)4 catalyst and Cs2CO3 as the base.
通过Pd催化的4-苯甲基吡啶的合成,通过4-哌啶和芳基卤化物之间的C(sp3)-H芳基化反应进行。发现最佳产率是使用简单的Pd(PPh3)4催化剂和Cs2CO3作为碱。