Conversion of a Hydroperoxo Complex, (TpiPr2)(py)Pd-OOH, into a Cyclic Alkylperoxo Complex, [HB(pziPr2)2(pz-3-CMe2-5-i-Pr)](py)Pd-OO, Catalyzed by Cu(II) Species [TpiPr2: Hydrotris(3,5-diisopropylpyrazolyl)borato]

Treatment of a hydroperoxopalladium complex, (TpiPr2)(py)Pd-OOH, with a catalytic amount of a Cu(II) species resulted in peroxidation of the methine moiety of an isopropyl group proximal to the metal center to give a cyclic alkylperoxopalladium complex.