Phase-transfer catalysis in oxidation of cyclohexene with potassium permanganate.: II -: Phase-transfer catalytic processes

Oxidation of cyclohexene with potassium permanganate was performed by phase-transfer catalysis in liquid-liquid and solid-liquid systems. Quaternary salts, crown-ethers or polyethylenglycols were used as phase-transfer catalysts and acetic acid was used as co-catalyst. The influence of the nature and of the concentration of the catalyst, of the reactants concentration, of the nature of the solvent and of the reaction temperature were investigated. The results emphasised the effects of the water concentration in biphasic systems on the activity of the phase-transfer catalysts and of the low temperature on the conversion for a high ratio: water to organic phase volume.