Ru-modified Octahedral Manganese Oxide Molecular Sieve (Ru-OMS-2) as a Reusable Heterogeneous Catalyst in Selective Oxidation of Olanzapine and Other Polycyclic Compounds.

Manganese oxide octahedral molecular sieve (OMS-2) nano-rods were synthesized in the presence of HNO3 and then ion-exchanged with Ru3+ to obtain Ru-modified scaffolds abbreviated as Ru-OMS-2. Various techniques including X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), energy dispersive X-Ray spectroscopy (EDS), X-Ray photoelectron spectroscopy (XPS), and EDS mapping analysis were used to characterize the structure of the obtained product. Ru-OMS-2 was then used as a reusable heterogeneous catalyst in the selective oxidation of polycyclic aromatic hydrocarbons and heterocyclic compounds such as olanzapine and benzothiophene in an aqueous solution. Under mild reaction conditions, excellent yields of the desired products (10 examples, 55–99% yield) were obtained with high selectivity, and the catalyst retained activity for several consecutive cycles with a reasonable loss of activity (7.5% after 10 runs). [ABSTRACT FROM AUTHOR]