Economical oxygenation of olefins and sulfides catalyzed by new molybdenum(VI) tridentate schiff base complexes: Synthesis and crystal structure

Article abstract of DOI:10.1002/zaac.201200079

New cis-dioxomolybdenum(VI) complexes (MoO₂Y^xCH ₃OH) were synthesized using MoO₂(acac)₂ and 2[(1-hydroxy-2-methylpropane-2-ylimino)methyl]phenol derivatives as tridentate ONO donor Schiff base ligands (H₂Y^x). MoY¹ was crystallized in orthorhombic space group Pbca. The epoxidation of olefins using tert-butyl hydroperoxide and oxidation of sulfides to the sulfoxides by hydrogen peroxide were efficiently enhanced by the catalytic activity of title Mo ^VI complexes with excellent selectivity. The high efficiency and relative stability of the catalysts was observed by turnover number and UV/Vis investigations. The electron-rich and bulky ligands promoted the effectiveness of the catalysts. Copyright