Multivariate optimization of the Kharasch-Sosnovsky allylic oxidation of olefins

The multivariate optimization method known as simplex is applied to the Kharasch-Sosnovsky allylic oxidation of double bonds. By applying this method, the amounts of three variables (copper source, oxidant, and additive) are optimized at the same time. Under the conditions thus obtained the reaction takes place in a considerable shorter time, being the alkene the limiting reagent. These conditions are applied to some monoterpenes and sesquiterpenes leading regioselectively to the corresponding benzoate esters, opening a route to the employment of this reaction in the synthesis of more complex molecules. (C) 2011 Elsevier Ltd. All rights reserved.