Manganese(III) acetate based selective oxidation of the tertiary α′-position on various cyclic α,β-unsaturated ketones

We describe the preliminary results of manganese(III) acetate based selective oxidation of various α′-methyl 2-cyclohexenone and 2-cyclopentenone derivatives to afford the corresponding α′-acetoxy-α′-methyl substituted oxidation products in good yields.