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Design, preparation and characterization of Cu/GA/Fe 3 O 4 @SiO 2 nanoparticles as a catalyst for the synthesis of benzodiazepines and imidazoles
Author(s) -
Shaabani Ahmad,
Sepahvand Heshmatollah,
Hooshmand Seyyed Emad,
Borjian Boroujeni Mahmoud
Publication year - 2016
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3448
Subject(s) - thermogravimetric analysis , catalysis , chemistry , inductively coupled plasma , fourier transform infrared spectroscopy , nanoparticle , nanocomposite , nuclear chemistry , spectroscopy , infrared spectroscopy , fourier transform spectroscopy , analytical chemistry (journal) , inductively coupled plasma atomic emission spectroscopy , transmission electron microscopy , elemental analysis , chemical engineering , nanotechnology , inorganic chemistry , organic chemistry , materials science , physics , plasma , quantum mechanics , engineering
The synthesis and characterization of an efficient and reusable nanocatalyst, Cu/GA/Fe 3 O 4 @SiO 2 , obtained by ultrasonic‐assisted grafting of guanidineacetic acid on modified Fe 3 O 4 @SiO 2 core–shell nanocomposite spheres and subsequent immobilization of Cu(II), are described. The catalyst was characterized by means of X‐ray diffraction, scanning and transmission electron microscopies, energy‐dispersive X‐ray spectroscopy, elemental analysis, thermogravimetric analysis, Fourier transform infrared spectroscopy , vibrating sample magnetometry and inductively coupled plasma optical emission spectrometry . The prepared nanocatalyst facilitated an efficient and straightforward friendly procedure for the synthesis of benzodiazepines and imidazoles in ethanol and under solvent‐free conditions, respectively. The nanocatalyst can be easily recovered using a magnet and reused several times without any significant loss of activity. Copyright © 2016 John Wiley & Sons, Ltd.