A Versatile Catalyst for Heck Reactions of Aryl Chlorides and Aryl Bromides under Mild Conditions
作者:Adam F. Littke、Gregory C. Fu
DOI:10.1021/ja010988c
日期:2001.7.1
for Heck reactions of aryl chlorides and bromides. A sterically and electronically diverse array of aryl bromides, as well as activated aryl chlorides, couple with a range of mono- and disubstituted olefins at room temperature, furnishing the arylated product with high E/Z stereoselection. The corresponding reactions of a broad spectrum of electron-neutral and electron-rich aryl chlorides proceed at
在 Cy2NMe 存在下,Pd/P(t-Bu)3 可作为一种非常温和且用途广泛的催化剂,用于芳基氯化物和溴化物的 Heck 反应。空间和电子上不同的芳基溴化物阵列以及活化的芳基氯化物,在室温下与一系列单取代和双取代的烯烃偶联,为芳基化产物提供高 E/Z 立体选择。广泛的电子中性和富电子芳基氯化物的相应反应在升高的温度下进行,并且具有高选择性。在范围和温和性方面,Pd/P(t-Bu)3/Cy2NMe 代表了先前报道的这些 Heck 偶联过程的催化剂的进步。