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Fe3O4/SiO2/(CH2)3N+Me3Br3− core–shell nanoparticles: A novel catalyst for the solvent-free synthesis of five- and six-membered heterocycles

Paper ID Volume ID Publish Year Pages File Format Full-Text
50360 46792 2015 6 PDF Available
Title
Fe3O4/SiO2/(CH2)3N+Me3Br3− core–shell nanoparticles: A novel catalyst for the solvent-free synthesis of five- and six-membered heterocycles
Abstract

•MNPs-(CH2)3N+Me3 tribromide, as a source of bromine, is synthesized.•MNPs-(CH2)3N+Me3 tribromide catalyzed efficient synthesis of heterocycles.•The catalyst was recovered and reused without significant loss in catalytic activity.

Functionalized magnetic core–shell nanoparticles [Fe3O4/SiO2/(CH2)3N+Me3Br3−] are prepared by co-precipitation method, characterized by transmission electron microscopy, FT-IR, X-ray diffraction, and vibrating sample magnetometer. The catalytic activity of these nanoparticles was tested in the syntheses of imidazole, benzothiazole, and perimidine derivatives, under solvent-free conditions. The catalyst was readily recycled by the use of an external magnetic field and could be reused five times without significant loss of activity or mass.

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Keywords
Magnetically retrievable; Grafting; Silica; Nano-hybrid; Heterocyclic synthesis; Solvent-free
First Page Preview
Fe3O4/SiO2/(CH2)3N+Me3Br3− core–shell nanoparticles: A novel catalyst for the solvent-free synthesis of five- and six-membered heterocycles
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 63, 10 March 2015, Pages 41–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis