VO(acac) 2 catalyzes the oxidation of aldehydes (aromatic, aliphatic, and heterocyclic) to the corresponding acids efficiently and selectively in the presence of H 2 O 2 as an oxidant. This method possesses functional-group compatibility, easy workup procedure, and shorter reaction time. The reaction is highly dependent on the solvent used. Performance of titania-supported VO(acac) 2 in the oxidation of aldehyde was also investigated.

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Aqueous H2O2. -The reaction provides a variety of carboxylic acids in an efficient manner in MeCN under either conditions A) or B), where similar yields are obtained. In methanol under conditions C), methyl esters are formed. Elevated temperatures render possible the preparation of ethyl esters. -(TALUKDAR, D.; SHARMA, K.; BHARADWAJ, S. K.; THAKUR*, A. J.; Synlett 24 (2013) 8, 963-966, http://dx.