REACTIVITY OF RADICALS CCl3(CH2CHR).N (R=H, CH3, Cl; n=1, 2) IN ADDITION REACTIONS WITH UNSATURATED COMPOUNDS

Article abstract of DOI:10.1007/BF00957978

Using EPR spectroscopy, the rate constants for the addition of radicals CCl3(CH2^-CH2)^.n (R¹ for n=1 and R² for n=2), CCl3CH2CH^.CH3 (R³), and CCl3CH2C^.HCl (R⁴) to unsaturated compounds CH2=CHX (X=C6H5, COOCH3, CN) and CH2=C(CH3)Y (Y=C6H5, COOCH3) at 22 deg C have been determined.The radicals R¹ and R² exhibit ampiphilic, and R⁴ electrophilic character towards the selected unsaturated compounds.It has been shown that the presence of the CCl3 group in γ-position of the radical center has little effect on the reactivity of the radical.Replacement of a hydrogen on the α-carbon in radical R¹ by a CH3 group or chlorine atom leads to a considerable reduction in the rate of addition of the radicals to the unsaturated compounds examined.