In addition to its effect on stability, delocalization of the unpaired electro in the allyl radical has other chemical consequences. Since the unpaired electron is delocalized over both end of the π orbital system, reaction with Br2 can occur at either end. As a result, allylic bromination of an unsym-metrical alkene often leads to a mixture of oroducts. For example, bromination of 1-octene gives a mixture of 3-bromo-1-octene and 1-bromo-2-octene. The two products are not formed in equal amouts, however, because the intermediate allylic radical is not symmetrical and reaction at the two ends is not equally lifely. Reaction at the lass hindered, primary end is favored.