Abstract
Nine different acetals have been oxidized in the presence of Co(OOCCH3)2.4 H2O under isobaric conditions (0.1 - 0.2 MPa O2 while following the uptake of molecular oxygen. The reactivity of acetals was expressed by the rate constants of the autocatalytic model of oxidation. The main products of the oxidation are alcohols, esters and acids. The distribution of products and the total reactivity of acetals are controlled by the structure of both parts of acetal molecule. The dominant effect on the course of the reaction exerts the type of carbon atoms on which radicals are formed. The oxidation is accompanied by consecutive and co-oxidation reactions, by deactivation of the catalyst and by decarbonylation of intermediate products. The effect of oxygen pressure is reported and the more detailed radical mechanism of the oxidation is proposed.
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