Kinetic characteristics and physicochemical properties of isobornyl phenols with different alkyl substituents in the ortho -position

The rate constants were measured for the reactions of isobornyl phenols (IBPs) containing methyl and tert-butyl substituents in the ortho-position with peroxide radicals in the initiated oxidation of ethylbenzene. The IR spectra of IBPs were analyzed, and the influence of IBPs on phosphatidylcholine aggregation in hexane was studied. The influence of the structure of substituents on the kinetic characteristics and physicochemical properties of the studied phenols is ambiguous. The data obtained indicate the competitive influence of the donor ability and shielding effects of the alkyl substituent in the ortho-position to the hydroxy group on the kinetic characteristics and physicochemical properties of IBPs.