Use of vanadium, niobium and tantalum peroxidic complexes as reagents and catalysts in the hydroxylation of aromatic hydrocarbons

摘要

the invention relates to a new organic complexes of vanadium, niobium and tantalum, and their method of manufacture.these complexes are formulaswhere m is vanadium, niobium or tantalum, where z and z 'are mono - or polycyclic aromatic nitrogen heterocyclic compounds, where z is a tridentate dianionic ligand.where l and l 'are a molecule of water, alcohol, or a ligand, and a is a proton, a cation or a cationic group.;the use of these complexes for olefin epoxidation and hydroxylation of hydrocarbons.