Kinetic Investigation of Olefin Oxidation by Al(III)-Porphyrin Complexes

Kinetic studies of olefin oxidation using Al(III)-porphyrin complexes as catalyst are investigated in CH₂Cl₂, in which NaClO is used as terminal oxidant. Porphyrins are TPP(5,10,15,20-Tetraphenylporphyrin) and (ρ- X)TPP(X=CH₃O, CH₃, F, Cl). Olefins are styrene and ( ρ-X)styrene (X=CH₃O, CH₃, Cl, Br). The values of Km and Vmax are calculated from the Michaelis-Menten equation. According to the substituents of substrate and catalyst, kinetic parameters will be measured. Investigating the correlation between the Michaelis-Menten rate parameters and the substituent constants, we were able to analyze the influence on the changes of catalytic activity or the rate determining step during the process of the formation and the dissociation of the M-oxo-olefin