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Synthesis and characterization of silica‐coated Fe 3 O 4 nanoparticle@silylpropyl triethylammonium polyoxometalate as an organic–inorganic hybrid heterogeneous catalyst for the one‐pot synthesis of tetrahydrobenzimidazo[2,1‐ b ]quinazolin‐1(2 H )‐ones
Author(s) -
Moussa Alkassoume,
Rahmati Abbas
Publication year - 2020
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.5894
Subject(s) - polyoxometalate , thermogravimetric analysis , catalysis , chemistry , nanoparticle , fourier transform infrared spectroscopy , inductively coupled plasma , infrared spectroscopy , heterogeneous catalysis , nuclear chemistry , atomic absorption spectroscopy , scanning electron microscope , elemental analysis , inorganic chemistry , chemical engineering , analytical chemistry (journal) , organic chemistry , materials science , physics , plasma , quantum mechanics , engineering , composite material
In this study, silica‐coated Fe 3 O 4 nanoparticle@silylpropyl triethylammonium polyoxometalate catalyst was fabricated and characterized using atomic absorption, inductively coupled plasma optical emission spectrometry, elemental analysis, thermogravimetric analysis, Fourier‐transform infrared, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, and vibrating sample magnetometry analyses. The activity of this catalyst was examined in the synthesis of tetrahydrobenzimidazo[2,1‐ b ]quinazolin‐1(2 H )‐ones. The bonding of the polyoxometalate to the surface of the nanoparticles exhibited excellent catalytic activity in this synthesis. Besides, the catalyst showed good reusability and recovery from the reaction mixture. Tetrahydrobenzimidazo[2,1‐ b ]quinazolin‐1(2 H )‐ones were synthesized in high yields in the presence of inexpensive supported solid acid catalysts under classical heating conditions.