Palladium Supported on Metformin-Functionalized Magnetic Polymer Nanocomposites: A Highly Efficient and Reusable Catalyst for the Suzuki-Miyaura Coupling Reaction
作者:Pengbo Yang、Rong Ma、Fengling Bian
DOI:10.1002/cctc.201600994
日期:2016.12.19
with arylboronic acids even at palladium loadings of 0.01–0.0007 mol % and the turnover frequency (TOF) reached up to 125 714 h−1. The excellent activity of this Pd/Fe3O4@PMAA‐Met catalyst could be attributed to a “release and catch” catalytic mechanism as well as its nanometer size. This nanocatalyst could be simply separated with an external magnet and reused at least twelve times with excellent yields
本文通过将钯固定在二甲双胍官能化的磁性聚合物表面上,成功制备了一种新型的磁响应纳米催化剂Pd / Fe 3 O 4 @ PMAA‐Met(PMAA =聚(甲基丙烯酸),Met =二甲双胍)。纳米复合材料。这种新型纳米催化剂的特征在于FTIR,XRD,TEM,X射线光电子能谱(XPS)和振动样品磁力法(VSM)。所制备的纳米催化剂表现出优异的催化活性为铃木-宫浦即使在0.01-0.0007摩尔%,转换频率(TOF)钯负载量偶联芳基卤化物(I,溴,氯)与芳基硼酸的反应达到高达125 714ħ - 1。这种Pd / Fe 3 O 4的出色活性@ PMAA-Met催化剂可归因于“释放和捕获”催化机理及其纳米尺寸。该纳米催化剂可以简单地用外部磁体分离,并且可以重复使用至少十二次,从而获得优异的收率。