Absolute Rate Constants for the Reactions of α-Toluenesulfonyl Chloride with Carbon-Centered Radicals

Article abstract of DOI:10.1021/jo00365a003

The absolute rate constants for the reaction of some carbon-centered radicals with α-toluenesulfonyl chloride have been measured in solution by using laser flash photolysis techniques.At 298 K, the rate constants are 1.3*10⁶, 1.2*10⁶, and 1.0*10⁸ M^-1s^-1 for n-butyl, sec-butyl, and phenyl radicals respectively.Arrhenius parameters were determined for n-butyl and sec-butyl radicals.Evidence that suggests the involvement of charge-transfer interactions is presented.Such rate-enhancing interactions have been shown to have a greater influence on the preexponential factor than on the activation energy.