<i>N</i>-Heterocarbene Palladium Complexes with Dianisole Backbones: Synthesis, Structure, and Catalysis
作者:Dong-Hui Li、Xu-Xian He、Chang Xu、Fei-Dong Huang、Ning Liu、Dong-Sheng Shen、Feng-Shou Liu
DOI:10.1021/acs.organomet.9b00230
日期:2019.6.24
C1–C5, bearing dianisole backbones and substituted N-aryl moieties have been synthesized and characterized. The electronic effect as well as the steric environment of the NHC ligands has been assessed. The synthesized palladium complexes were applied for Suzuki–Miyaura cross-coupling reactions under aerobic conditions. The relationship between the catalytic structure and catalytic performance was then
已合成并表征了一系列钯N-杂环卡宾(NHC),配合物C1 - C5,带有二苯甲醚骨架和取代的N-芳基部分。已经评估了NHC配体的电子效应以及空间环境。合成的钯配合物用于有氧条件下的Suzuki-Miyaura交叉偶联反应。然后广泛研究了催化结构和催化性能之间的关系。通过优化反应条件,发现C4在钯含量为0.1 mol%的情况下催化(杂)芳基氯化物与(杂)芳基硼酸的交叉偶联反应非常高效。