The oxidation state of molybdenum in a catalyst of epoxidation of olefins by hydroperoxides

Metal-Catalysed Epoxidations of Olefins with Hydroperoxides

“…46) is the competing side reaction [88][89][90][91][92][93][94][95][96]. It is now generally accepted that Mo(VI) is the active catalyst and that homolysis (Eq.…”

“…(95) and (96) proceed readily at room temperature to give quantitative yields of the epoxides [165,166]. (95) and (96) proceed readily at room temperature to give quantitative yields of the epoxides [165,166].…”

Oxidative transformations in the VV/H2O2/RCOOH system

“…Reactions catalysed by molybdenum 2 and titanium 3,4 compounds have found industrial application. The kinetics and mechanism of propylene epoxidation with α-phenylethylhydroperoxide in the presence of molybdenum complexes have been studied by Gavrilenko et al [5][6][7] It is generally accepted that peroxo complexes of transition metals are catalysts or active intermediates in hydroperoxide oxidation reactions. 8 The composition of the coordination sphere and the type of coordination of the peroxo ligand depend on the nature of the central atom and on the composition of the reaction medium, and they are a matter of discussion in most cases.…”