Document Type : Original Paper

Authors

• E. Rezaee Nezhad
• S. Karimian
• S. Sajjadifar

Department of Chemistry, Payame Noor University, PB BOX 19395-4697 Tehran, Islamic Republic of Iran

Abstract

The Magnetically recoverable Fe3O4 nanoparticle and the supported brønsted acidic ionic liquid 1-methyl-3-(3-trimethoxysilylpropyl) imidazolium hydrogen sulfate (Fe₃O₄-IL-HSO₄) were synthesized and used as efficient magnetic catalysts for the regioselective thiocyanation of aromatic and heteroaromatic compounds at room temperature in Water: Ethanol. This procedure provided the target thiocyanates after short reaction times in good to excellent yields and high regioselectivity.The catalyst can be readily isolated by using an external magnet and no obvious loss of activity was observed when the catalyst was reused in seven consecutive runs. The mean size and the surface morphology of the nanoparticles were characterized by TEM, SEM, VSM, XRD and FTIR techniques. 

Keywords

• Magnetic nanoparticles
• Ionic liquid
• Thiocyanation
• Regioselective
• Room temperature