Y. Watanabe et al., NEW METHOD IN FREE-RADICAL CHEMISTRY USING 2,4-DIPHENYL-4-METHYL-1-PENTENE AS RADICAL TRAPPING AGENT, Polymer Journal, 29(4), 1997, pp. 366-369
The thermal decomposition of four dialkyl peroxides was carried out in
2,4-diphenyl-4-methyl-1-pentene (alpha-methylstyrene dimer, MSD) at 1
40 degrees. Free radicals generated from the peroxides efficiently add
ed to the double bond of MSD, and the adduct radicals underwent fragme
ntation to give olefinic compounds (1) and cumyl radicals. The charact
erization of 1 provided useful information about the free radical spec
ies that added to the styrenic double bond of MSD. The present method
using MSD as a radical trapping agent is useful for investigating the
initiation mechanisms of organic peroxides even at high temperature.