We have developed the N-heterocyclic carbene ligand/PdCl₂ catalyst for CC coupling reaction of aryl iodides and organobismuths at room temperature. The established catalytic system exhibited high cross-coupling reactivity between a variety of orgnobismuths and aryl iodides in the presence of K₂CO₃ as base in NMP or DMSO at room temperature. The simple and efficient transformation can tolerate either electron-withdrawing or electron-donating functional groups. It was notably found that both aryl bromide and aryl chloride generated moderate to good yields of the corresponding biphenyl products using 5 mol% of PPh₃/ligand 5 (1:1) as catalyst.

我们已经开发出用于在室温下芳基碘化物和有机铋的C C偶联反应的N杂环卡宾配体/ PdCl ₂催化剂。所建立的催化体系在室温下在NMP或DMSO中存在以K ₂ CO ₃为碱的情况下，在各种正铋和芳基碘之间表现出较高的交叉偶联反应性。简单而有效的转化可以耐受吸电子或给电子官能团。值得注意的是，使用5mol％的PPh ₃ /配体5（1∶1）作为催化剂，芳基溴化物和芳基氯均产生中等至良好产率的相应联苯产物。