Synthesis and Catalytic Activity of Chiral Linker-Bridged Bis-N-Heterocyclic Carbene Dipalladium Complexes
作者:Xu Li、Guowen Zhang、Man Chao、Changsheng Cao、Guangsheng Pang、Yanhui Shi
DOI:10.3184/174751918x15293145282582
日期:2018.6
substituents and their corresponding palladium complexes have been synthesised. The effect of the substituents on the catalytic activity of these Pd complexes was investigated in the Suzuki reaction of p-bromotoluene with phenylboronic acid, and the results showed that the complexes with aryl substituents performed better than those with alkyl substituents. The complex with the most sterically hindered substituent
合成了一系列具有不同取代基的新型手性桥接N-杂环卡宾配体及其相应的钯配合物。在对溴甲苯与苯基硼酸的 Suzuki 反应中研究了取代基对这些 Pd 配合物催化活性的影响,结果表明具有芳基取代基的配合物比具有烷基取代基的配合物表现更好。具有最大空间位阻取代基(苯基上的二异丙基)的配合物表现最好,它也是各种芳基硼酸与具有不同电子和空间性质的芳基卤反应的有效催化剂。此外,它被用作不对称 Suzuki 反应的催化剂,但收率仅为 1,