Approximate rate constants for intermolecular additions of alkyl radicals to phenylsulfonyl oxime ethers

Article abstract of DOI:10.1016/S0040-4039(98)00035-5

Approximate rate constants for intermolecular additions of alkyl radicals to phenylsulfonyl oxime ethers (2a and 2b) have been determined to be k(a) = 9.6 x 10⁵ M^-1 s^-1 at 25°C for 2a and k(a) = 7.3 x 10⁴ M^-1 s^-1 at 60°C for 2b, indicating that the additions are fast and highly efficient processes. The kinetic data have been confirmed by two competition experiments.