Ultrasonic-assisted ruthenium-catalyzed oxidation of aromatic and heteroaromatic compounds

Ruthenium-catalyzed oxidation of aromatic and heteroaromatic compounds is reported. It was found that ultrasonic irradiation in a biphasic system consisting of substrate, CH2Cl2, H2O, CH3CN, NaIO4 and catalytic amounts of RuCl3 center dot nH(2)O, accelerates the oxidation reaction to afford the desired products in good yields. (c) 2007 Elsevier B.V. All rights reserved.