Tailored oxido-vanadium(V) cage complexes for selective sulfoxidation in confined spaces

摘要: Five sets of oxido-vanadium(V) complexes, which include both cages and open structures, were prepared tested in the catalytic oxidation sulfides. It was found that hemicryptophane are simultaneously comprised cyclotriveratrylene (CTV), binaphthol moieties, most efficient supramolecular catalysts. The specific shape confined hydrophobic space above metal center leads to a strong improvement yield, selectivity rate reaction, compared other catalysts investigated herein. A remarkable turnover number (TON) 10 000 obtained, can be attributed high reactivity stability catalyst. Similarly enzymes, kinetic analysis shows mechanism with obeys Michaelis–Menten model, initial saturation occurs upon an increase substrate concentration. This enzyme-like behavior is also supported by competitive inhibition size-selectivity observed, underline crucial role played cavity.