“…The Kharasch reaction with CCl 4 yields a,a,a,g-tetrachloroalkanes, while telomerization opens a way to a,a,a,o-tetrachloroalkanes. In the beginning free-radical initiators like azo-(bis)-diisobutyronitrile or benzoyl peroxide [57][58][59][60] were used; later, metal complexes became popular.…”