Bis(imidazolium) chloride based on 1,2-phenylenediamine as efficient ligand precursor for palladium-catalyzed Mizoroki-Heck cross-coupling reaction
作者:Ahmad Takallou、Azizollah Habibi、Azim Ziyaei Halimehjani、Saeed Balalaie
DOI:10.1016/j.jorganchem.2019.02.025
日期:2019.6
Bis(imidazolium) chlorides based on 1,2-phenylenediamine were introduced as efficient ligand precursors in the Pd-catalyzed Mizoroki-Heck cross-coupling reactions of substituted aryl halides with activated alkenes to afford the corresponding functionalized alkenes. While high to excellent yields (78–96%) were obtained with aryl bromides, moderate yields (51–59%) were achieved for aryl chlorides in
在取代的芳基卤化物与活化的烯烃进行Pd催化的Mizoroki-Heck交叉偶联反应中,引入了基于1,2-苯二胺的双(咪唑鎓)氯化物作为有效的配体前体,从而提供了相应的官能化烯烃。虽然使用该芳基溴化物可实现高至优异的收率(78–96%),但在此方案中,芳基氯化物可实现中等收率(51–59%)。