M. Ghasemzadeh, B. Akhlaghinia
Jul 31, 2017
Citations
0
Influential Citations
28
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
In this research 2-aminoethanesulfonic acid immobilized on epichlorohydrin functionalized Fe3O4@WO3 (Fe3O4@WO3-EAE-SO3H) has been introduced as a novel and efficient magnetic nanocatalyst for appropriate and rapid synthesis of 1-substituted-1H-1,2,3,4-tetrazoles. This new nanocatalyst was then characterized using FT-IR, XRD, TEM, EDS, TGA, FE-SEM, CHNS and VSM techniques. The above experimental results allowed determination of the composition of Fe3O4@WO3-EAE-SO3H and clearly revealed that the nanoparticles are spherical in shape with particle size in the range of 7–23 nm and superparamagnetic behavior. Fe3O4@WO3-EAE-SO3H as an excellent replacement for Bronsted acids was shown to be highly efficient in the rapid preparation of 1-substituted-1H-1,2,3,4-tetrazoles through the cyclization reaction of various primary amines, triethyl orthoformate and 1-butyl-3-methylimidazolium azide ([bmim][N3]). Compared with conventional methods, the present protocol has considerable advantages such as short reaction time...