The reaction of aryl(iodo)palladium(II)(bpy) complex with 2,3-dibromothiophene in the presence of AgNO3/KF as an activator induces CH arylation in 64–78% yields. These results suggest that palladium-catalyzed CH arylation of bromothiophene derivatives proceeds through the electrophilic substitution of aryl(iodo)palladium(II) complex triggered by AgNO3/KF to form the aryl(thienyl)palladium(II) complex, which readily undergoes reductive elimination to give the CH arylation product.
芳基(
碘)
钯(II)(bpy)配合物与
2,3-二溴噻吩在AgNO3/KF的活化剂存在下反应,诱导CH芳基化,产率为64-78%。这些结果表明,
溴噻吩衍
生物的
钯催化CH芳基化是通过芳基(
碘)
钯(II)配合物的电亲核取代反应进行的,该反应由AgNO3/KF触发形成芳基(
噻吩基)
钯(II)配合物,该配合物随即发生还原消除反应,从而生成CH芳基化产物。