文献类型：期刊文献

英文题名：Nanopalladium on polyethylenimine-grafted starch: An efficient and ecofriendly heterogeneous catalyst for Suzuki-Miyaura coupling and transfer hydrogenation reactions

作者：Fu, Lixia[1];Deng, Wenxiu[1];Liu, Lujie[1];Peng, Yanqing[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Chem Biol, Sch Pharm, Shanghai 200237, Peoples R China

年份：2017

卷号：31

期号：12

外文期刊名：APPLIED ORGANOMETALLIC CHEMISTRY

收录：;EI(收录号：20172903952298);WOS:【SCI-EXPANDED(收录号:WOS:000419195800037)】；

基金：Shanghai Commission of Science and Technology, Grant/Award Number: 08431901800

语种：英文

外文关键词：catalyst; palladium nanoparticles; polyethylenimine; Suzuki-Miyaura coupling; transfer hydrogenation

摘要：Functionalized natural polysaccharides are attractive supports for colloidal metal nanocatalysts due to their abundance, cheapness, biocompatibility and biodegradability. In this study, isocyanate-functionalized starch was prepared by treating with diisocyanate. Polyethylenimine grafted onto starch via the formation of urea linker. The palladium nanoparticles deposited starch PEIS@Pd(0) was obtained through a chelating-in situ reduction procedure. Characterization of these materials was done using Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and inductive coupled plasma atomic emission spectrometry. The catalytic activity of PEIS@Pd(0) was then tested in two series of model reactions: Suzuki-Miyaura coupling and transfer hydrogenation. The catalyst could be recovered by simple filtration and was reused for five times without significant loss of catalytic activity, which confirmed the good stability of the catalyst.