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Anchored Ni‐dimethylglyoxime complex on Fe 3 O 4 @SiO 2 core/shell nanoparticles for the clean catalytical synthesis of dicoumarols
Author(s) -
Hassanloie Nishtman,
Noroozi Pesyan Nader,
Sheykhaghaei Golaleh
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.5242
Subject(s) - dimethylglyoxime , chemistry , superparamagnetism , fourier transform infrared spectroscopy , catalysis , nanoparticle , spectroscopy , analytical chemistry (journal) , nuclear chemistry , nanotechnology , chemical engineering , nickel , organic chemistry , magnetic field , materials science , magnetization , physics , quantum mechanics , engineering
Ni‐Dimethylglyoxime complex immobilized on functionalized Fe 3 O 4 was synthesized by a post‐grafting way and utilized as a novel, thermally stable, recoverable, and efficient for green synthesis of dicoumarols through reaction of 4‐hydroxycoumarin with various aldehydes in excellent yields and higher rate. Fe 3 O 4 @SiO 2 ‐silylcyclopropyl‐dimethylglyoxime‐Ni superparamagnetic nanoparticles (MNP s ) were investigated by Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X‐ray spectroscopy, X‐ray diffraction, vibrating sample magnetometer, and Brunauer–Emmett–Teller technique. This nanocatalyst could be conveniently recovered via the use of an external magnetic field and reused for subsequent reactions for at least 7 times without any remarkable change and decrease in catalytic activity.