Abstract
A variety of imines were oxidised with urea–hydrogen peroxide using iron(III) and manganese (III)- tetraphenylporphyrins [Fe(TPP)Cl], [Mn(TPP)Cl] and manganese (III)-octabromotetraphenyl porphyrin [Mn(TPPBr8)Cl] as catalysts. Experimental results showed the released urea from UHP acts as an axial ligand. These catalysts showed high selectivity in oxidation of imines to corresponding nitrones and oxaziridines at 0°C to room temperature.
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