Chain transfer constants in the radical telomerization of vinyl chloride, propylene, and ethylene with carbon tetrachloride and chloroform; sensitivity of substitution reactions with cleavage of C-H and C-C1 bonds to polar effects

Abstract

1. The particular constants of transfer of radicals with a chain length from one to three monomer units in the radical telomerization of vinyl chloride with CC14 at 55, 105, and 145° were determined. 2. Some general principles of the variation of the particular constants of transfer in the radical telomerization of vinyl chloride, ethylene, and propylene with chloromethanes and the peculiarities of the mechanism of these reactions were considered (using the Bamford correlation scheme). 3. Substitution at the C-C1 bond for all the CC13(CH2CHR) · radicals studied (R=Cl, H, CH3) is considerably more sensitive to polar effects than substitution at C-nH.