To overcome this problem, phase-transfer catalysis4 and cyclic polyethers5 have been used to solubilize the oxidant into the organic phase. A great number of organic reactions using solid-supported reagents have been developed in the past, 6 where permanganate oxidations play a main role. Potassium permanganate supported on molecular sieves7 or silica gel* have been used to oxidize alcohols to carbonyl compounds and to convert y- ...