Magnesium-iron bimetal oxides as an effective magnetized solid-base catalyst for the synthesis of substituted 2-aminthiophenes

< p>Mg-Fe bi-metal oxide was prepared and utilized as a magnetized renewable solid base catalyst for formation of 2-aminothiophenes by means of Gewald’s reaction. The prepared heterogeneous basic solid catalyst can be separated by a magnet and reused without considerable wastage in this activity. The structure of the aforementioned magnetized basic nano-catalyst was studied by XRD (X-ray diffraction), SEM (scanning electron microscopy), TEM (transmission electron microscopy), EDS (energy dispersive x-ray spectroscopy) and VSM (vibrating sample magnetometry) techniques. The present methodology offers several advantages such as high yields of products, shorter reaction times, environmentally friendly conditions, low catalyst dosage, high endurance and facile work-up.