Reusable, Polystyrene-Resin-Supported, Palladium-Catalyzed, Atom-Efficient Cross-Coupling Reaction of Aryl Halides with Triarylbismuths
作者:Wen-Jun Zhou、Ke-Hu Wang、Jin-Xian Wang、Dan-Feng Huang
DOI:10.1002/ejoc.200901210
日期:2010.1
A rapid, atom-efficient, cross-coupling reaction of triarylbismuths with aryl bromides or aryl iodides was reported, and the reaction involves the use of a catalytic amount of polystyrene-supported palladium in the presence of KF as base in DMSO at 105 °C in an open atmosphere. All three aryl groups of the triarylbismuths participated in the reaction and produced polyfunctional biaryls in excellent
据报道,三芳基铋与芳基溴化物或芳基碘化物发生快速、原子效率高的交叉偶联反应,该反应涉及使用催化量的聚苯乙烯负载的钯,在 105 °C 的 DMSO 中以 KF 作为碱存在在开放的气氛中。三芳基铋的所有三个芳基都参与了反应并以优异的产率生成了多官能联芳基化合物。聚合物催化剂可以很容易地从反应混合物中分离出来,并且可以重复使用 10 次以上,而没有表现出任何明显的活性下降。