The Sonogashira coupling reaction catalyzed by ultrafine nickel(0) powder has been developed; terminal alkynes couple with aryl, alkenyl iodide and aryl bromide in the presence of cuprous iodide, triphenylphosphine, potassium hydroxide and ultrafine particle nickel(0) to provide the corresponding cross-coupling products with high yields.
已开发由超细
镍(0)粉末催化的Sonogashira偶联反应;末端
炔烃在
氯化
铜、
三苯基膦、
氢氧化钾和超细
镍(0)的存在下与芳基、烯基
碘化物和芳基
溴化物偶联,提供相应的交叉偶联产物,产率很高。