chemoselective oxidation of sulfides to sulfoxides using a novel zn-dabco functionalized fe3o4 mnps as highly effective nanomagnetic catalyst

In the present study, zn–dabco@fe3o4 with a high surface area and readily was synthesized. the morphology, particle size distribution, and phase analysis of the zn–dabco@fe3o4 nanopowders were characterized using the scanning electron microscope (sem), transmission electron microscope (tem), vibrating sample magnetometer (vsm) and xray diffraction (xrd) analysis. the prepared zn–dabco@fe3o4 nanoparticle was utilized as efficient catalyst for selective oxidation of sulfides to sulfoxides using 30% h2o2 as oxidant. the products were achieved with good to excellent yields at room temperature with no overoxidation of sulfoxides and disulfides to unexpected byproducts. this catalyst can be magnetically recovered by applying an external magnet and reused for eight continuous cycles in both oxidation reactions without a notable loss in its catalytic activity. furthermore, the oxidation of various sulfides was highly chemoselective, but o,oacetals remained intact under the described reaction conditions.