作者:Shanghua Xia、Lu Gan、Kailiang Wang、Zheng Li、Dawei Ma
DOI:10.1021/jacs.6b08114
日期:2016.10.19
powerful catalytic system for hydroxylation of (hetero)aryl halides. A wide range of (hetero)aryl chlorides bearing either electron-donating or -withdrawing groups proceeded well at 130 °C, delivering the corresponding phenols and hydroxylated heteroarenes in good to excellent yields. When more reactive (hetero)aryl bromides and iodides were employed, the hydroxylation reactions completed at relatively
Cu(acac)2 和 N,N'-双(4-羟基-2,6-二甲基苯基)草酰胺 (BHMPO) 的组合为(杂)芳基卤化物的羟基化提供了强大的催化系统。各种带有给电子或吸电子基团的(杂)芳基氯化物在 130 °C 下均能很好地进行,以良好到极好的产率提供相应的酚类和羟基化杂芳烃。当使用反应性更强的(杂)芳基溴化物和碘化物时,羟基化反应在相对较低的温度(分别为 80 和 60 °C)下在低催化负载(0.5 mol% Cu)下完成。