University of Jiroft | Mahboobeh Zahedifar

Research

Title	Novel magnetic nanoparticle supported ionic liquid as an efficient catalyst for the synthesis of new spiro derivatives by the reaction of 3-amino-1- phenyl-2-pyrazolin-5-one with aryl aldehydes
Type	Article
Keywords	Ionic liquids; spiro compounds; nanomagnetic catalyst, 3-amino pyrazolone
Researchers	Reza Shojaei, Mahboobeh Zahedifar, Pourya Mohammadi, Kazem Saidi, Hassan Sheibani

Abstract

A magnetically supported ionic liquid, guanidinium hydrogen sulfate on Fe3O4 nanoparticles, has been synthesized and evaluated as a recoverable and efficient catalyst for the one-pot synthesis of spiro [pyrazole-pyrazolo[3,4-b]pyridine]-dione derivatives via the reaction of 3-amino-1-phenyl-2-pyrazolin-5-one with aryl aldehydes in good yields under mild experimental conditions. The magnetic catalyst could be separated from the reaction mixture with the assistance of an external magnet. The catalyst was characterized via X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDX). Furthermore, the structures of the new compounds were fully characterized by their spectral data IR, 1H NMR, and 13C NMR