Acidic Ionic Liquid Based Silica-Coated Fe3O4 Nanoparticles as a New Nanomagnetic Catalyst for Preparation of Aryl and Heteroaryl Thiocyanates
Journal: Chemical Methodologies (Vol.4, No. 5)Publication Date: 2020-09-01
Authors : Sami Sajjadifar; Issa Amini; Sepideh Habibzadeh; Ghobad Mansouri; Esfandeyar Ebadi;
Page : 623-634
Keywords : Thiocyanation; Nanomagnetic catalyst; Mild oxidant; Aromatic and heteroaromatic compounds;
Abstract
In this research study, acidic ionic liquid based silica-coated Fe3O4 nanoparticles [Fe3O4@SiO2@(CH2)3-Py]HSO4as an efficient and reusable magnetic nanocatalyst was synthesized and characterized using the FT-IR, TEM, VSM, XRD, and TGA analysis. The catalytic performance of the [Fe3O4@SiO2@(CH2)3-Py]HSO4was evaluated towards the regioselective thiocyanation of aromatic and heteroaromatic compounds with KSCN as a thiocyanate source afforded the corresponding aryl and heteroaryl thiocyanates derivatives 2a-n at room temperature in H2O2 as a clean oxidant and ethanol as a green solvent. A broad range of products 2a-n was synthesized high yields (up to yield 97%) under the mild reaction conditions.
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