Narrow Results

Olefin epoxidation using o-phenyl and $\beta$-pyrrole substituted tetraphenyl porphyrin complexes of Fe(III) and Mn(III) as catalysts and ${}^{\mathrm{\text{y}}}$Iodosylbenzene as oxidant was studied. Excellent yields of epoxide and secondary oxidation products were observed. Effect of pyridine, imadizole, sodium lauryl sulphate, and solvent variation was also studied. Effect of substituents on catalytic activity of the porphyrin complex is also explained. o-phenyl substituted complexes gave better yield of epoxide as compared to $\beta$-pyrrole substituted complexes.