@article{dc096776ab5b4875874fab2e7db50972,
title = "The effect of silica-coating on catalyst recyclability in ionic magnetic nanoparticle-supported Grubbs-Hoveyda catalysts for ring-closing metathesis",
abstract = "The Grubbs-Hoveyda type ruthenium-carbene complexes have been covalently immobilized on both silica coated and uncoated magnetic nanoparticles utilizing an imidazolium salt linker. These MNP-supported catalysts showed comparable catalytic activity to the homogeneous imidazolium salt-tagged ruthenium catalyst in the ring-closing metathesis (RCM) of dienes, and could effectively catalyze RCM reactions in the presence of only 0.85 mol % Ru. The MNP-supported ruthenium catalysts could be easily recovered using an external magnet. The recyclability of the silica-coated MNP-supported catalysts was superior to silica uncoated MNP-supported catalysts allowing reuse 14 times, due to the increased compatibility of the silica-coated MNPs with the reaction medium.",
keywords = "Immobilization, Ionic materials, Magnetic nanoparticles, Metathesis, Ruthenium",
author = "Chen, {Shu Wei} and Zhang, {Zhi Cheng} and Zhai, {Ning Ning} and Zhong, {Chong Min} and Lee, {Sang Gi}",
note = "Funding Information: This work was supported by the National Natural Science Foundation of China (No. 21202131 ), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (No. K308021305 ), the Foundation of Northwest A&F University (No. Z109021114 ), the Fundamental Research Funds for the Central Universities (No. 2014YB026 ), and the Korea Research Foundation ( 2011-0016344 and 2012-0000908 for S.-g. Lee). We thank Dr. Kris Rathwell at the NanoBio Institute at Ewha Womans University for his critical reading of this manuscript. Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd. All rights reserved.",
year = "2015",
month = jan,
day = "28",
doi = "10.1016/j.tet.2014.12.024",
language = "English",
volume = "71",
pages = "648--653",
journal = "Tetrahedron",
issn = "0040-4020",
publisher = "Elsevier Ltd.",
number = "4",
}