naa a22 4500 510733581 CHVBK 20180411083001.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s12039-013-0506-7 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0506-7 A selective nanocatalyst for an efficient Ugi reaction: Magnetically recoverable Cu(acac)2/NH2-T/SiO2Fe3O4 nanoparticles [Elektronische Daten] [MONIREH GHAVAMI, MARYAM KOOHI, MOHAMMAD KASSAEE] A novel, magnetically recoverable nanocatalyst is fabricated through simple immobilization of copper(II) acetylacetonate on the surface of amine-terminated silica-coated Fe3O4 nanoparticles: Cu(acac)2/NH2-T/SiO2@Fe3O4NPs. Unambiguous bonding of Cu to the terminal amine is indicated by X-ray photoelectron spectroscopy (XPS). Further characterizations are carried out by different techniques. Selectivity of this catalyst is demonstrated through one-pot synthesis of fourteen α-aminoacyl amides using Ugi four-component reaction of cyclohexyl isocyanide, acetic acid, amines and various aldehydes. Interestingly, all aromatic aldehydes react with short reaction times and high yields, but heteroaromatic aldehydes do not yield any product. Catalyst efficiency remains unaltered through three consecutive experiments. Graphical Abstract A novel, magnetically recoverable nanocatalyst is fabricated through simple immobilization of copper(II) acetylacetonate on the surface of amineterminated silica-coated Fe3O4 nanoparticles: Cu(acac)2/NH2-T/SiO2@Fe3O4NPs. Selectivity of this catalyst is demonstrated through one-pot synthesis of α-aminoacyl amides using Ugi four-component reaction. Indian Academy of Sciences, 2013 Nano nationallicence Fe3O4 nationallicence copper(II) acetylacetonate nationallicence Ugi reaction nationallicence nanocatalyst nationallicence GHAVAMI MONIREH Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran aut KOOHI MARYAM Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran aut KASSAEE MOHAMMAD Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran aut Journal of Chemical Sciences Springer India 125/6(2013-11-01), 1347-1357 0974-3626 125:6<1347 2013 125 12039 https://doi.org/10.1007/s12039-013-0506-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0506-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- GHAVAMI MONIREH Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran aut NATIONALLICENCE 700 1- KOOHI MARYAM Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran aut NATIONALLICENCE 700 1- KASSAEE MOHAMMAD Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer India 125/6(2013-11-01), 1347-1357 0974-3626 125:6<1347 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer