fe3o4@aptes@isatin-so3h as heterogeneous and efficient catalyst for the synthesis of quinoxaline derivatives

In this work, an efficient and new fe3o4@aptes@isatin-so3hwas synthesized through immobilization of isatin sulfonic acid on silica modified fe3o4 nanoparticles. the synthesizedfe3o4@aptes@isatin-so3hmagnetic nanoparticles (mnps) were characterized using the energy dispersive x-ray spectroscopy (edx), fourier transform infrared spectroscopy (ft-ir), scanning electron microscopy (sem), transmission electron microscopy (tem), vibrating sample magnetometer (vsm), x-ray diffraction (xrd), and thermogravimetric(tga) analysis. the fe3o4@aptes@isatin-so3hmnps performed efficient catalytic activity as a magnetically recyclable heterogeneous catalyst for one-pot, condensation reaction of 1,2-dicarbonyl compounds and o-phenylen diamines in ethanol at room temperature to afford quinoxaline derivatives.