naa a22 4500 510734464 CHVBK 20180411083004.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12039-013-0462-2 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0462-2 Sulphamic acid-functionalized magnetic Fe3O4 nanoparticles as recyclable catalyst for synthesis of imidazoles under microwave irradiation [Elektronische Daten] [JAVAD SAFARI, ZOHRE ZARNEGAR] Trisubstituted imidazoles have been synthesized in high yield in the presence of sulphamic acid-functionalized magnetic Fe3O4 nanoparticles (SA-MNPs) as a novel solid acid catalyst under solvent-free classical heating conditions or using microwave irradiation. The heterogeneous catalyst could be recovered easily and reused many times without significant loss of catalytic activity. Graphical Abstract An efficient procedure for the synthesis of imidazoles has been developed by condensation reaction of 1, 2-diketones, aromatic aldehydes, and ammonium acetate using sulphamic acid-functionalized Fe3O4 nanoparticles under microwave irradiation. This method offers several advantages including high yield, short reaction time, simple work-up procedure and recyclability of the magnetic catalyst. Indian Academy of Sciences, 2013 Magnetic nanoparticles nationallicence sulphamic acid nationallicence imidazole nationallicence solid acid catalyst nationallicence microwave irradiation nationallicence SAFARI JAVAD Laboratory of Organic Compound Research, Department of Organic Chemistry, College of Chemistry, University of Kashan, P.O. Box: 87317-51167, Kashan, Islamic Republic of Iran aut ZARNEGAR ZOHRE Laboratory of Organic Compound Research, Department of Organic Chemistry, College of Chemistry, University of Kashan, P.O. Box: 87317-51167, Kashan, Islamic Republic of Iran aut Journal of Chemical Sciences Springer India 125/4(2013-07-01), 835-841 0974-3626 125:4<835 2013 125 12039 https://doi.org/10.1007/s12039-013-0462-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0462-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- SAFARI JAVAD Laboratory of Organic Compound Research, Department of Organic Chemistry, College of Chemistry, University of Kashan, P.O. Box: 87317-51167, Kashan, Islamic Republic of Iran aut NATIONALLICENCE 700 1- ZARNEGAR ZOHRE Laboratory of Organic Compound Research, Department of Organic Chemistry, College of Chemistry, University of Kashan, P.O. Box: 87317-51167, Kashan, Islamic Republic of Iran aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer India 125/4(2013-07-01), 835-841 0974-3626 125:4<835 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer