Environmentally friendly and selective oxidation of sulfides and oxidative coupling of mercaptans in the presence of fabricated oxo-vanadium on modified MCM-۴۱ with ۵-nitro-۲-hydroxy benzaldehyde

In recent years, nanomaterials have been widely used as solid supports for the immobilization ofhomogeneous catalysts. Among the various nanomaterial, MCM-۴۱ has high stability, and large specificsurface area. High thermal stability of MCM-۴۱ allows the application of MCM-۴۱ in harsh condition andits heterogeneity nature allows the recycling of supported catalysts. Also, the large pore volume of MCM-۴۱ allows supporting of metal complexes into its channels. Therefore, we are reporting a Schiff-base ligandof ۵-nitro-۲-hydroxy benzaldehyde on MCM-۴۱ for fabrication of oxo-vanadium (V(O)-۵NSA-MCM-۴۱)as an environmentally friendly, efficient and reusable catalyst for the selective oxidation of sulfides andoxidative coupling of mercaptans. Because, oxidation reactions are one of the powerful tools and practicalmethods for the synthesis of biologically actives compounds and transformation of organic functionalgroups. For example, they have some of biologically active such as antiulcer, antibacterial, antifungal, antiatheroscleroticand anti-hypertensive. In this work, H۲O۲ was used as environmentally friendly oxidantreagent. Because among the various oxidants such as metal oxidants, organic oxidant, peroxides andhalogens, H۲O۲ is an available, inexpensive and environmentally benign oxidant.