In the competitive peroxidation of mixtures of two alkenes with Co (II)/O2/Et3SiH, it was found that the relative reactivities of the alkene substrates are influenced by three major factors:.(1) relative stability of the intermediate carbon-centered radical formed by the reaction of the alkene with HCo (III) complex,(2) steric effects around the CC double bond, and (3) electronic factors associated with the CC double bond. Consistent with results ...