Efficient Synthesis of Biaryls through the Kumada Reaction Catalyzed by Carbene Adducts of Cyclopalladated Ferrocenylimine
作者:Gerui Ren、Xiuling Cui、Yangjie Wu
DOI:10.1002/ejoc.200901495
日期:2010.4
A series of carbene adducts of cyclopalladatedferrocenylimine were prepared and evaluated in the cross-coupling reaction of aryl halides with Grignard reagents (the Kumada reaction). Complex d exhibited high catalytic activity for the coupling of aryl chlorides with sterically hindered Grignard reagents and the reaction tolerated various functional groups. A wide range of biaryls were efficiently
在芳基卤化物与格氏试剂(Kumada 反应)的交叉偶联反应中制备并评估了一系列环钯化二茂铁亚胺的卡宾加合物。配合物 d 对芳基氯与位阻格氏试剂的偶联表现出高催化活性,并且该反应可以耐受各种官能团。在温和的反应条件下,在 0.5 mol% 催化剂的存在下,以良好到极好的收率有效地获得了广泛的联芳基化合物。