Journal of the Chemical Society. Perkin transactions II p. 349 - 352 (1990)
Update date:2022-07-30
Topics:
Murray, Robert W.
Shiang, Dawn L.
The relative rates of epoxidation by dimethyldioxirane, (1), of a series of 4-substituted (E)-ethyl cinnamates have been studied.The data were treated with the Hammett linear free energy relationship and give ρ = - 1.53 indicating an electrophilic O-atom transfer.Second-order rate coefficients were determined for the epoxidation of (E)-ethyl cinnamate by (1) at several temperatures and the Arrhenius factors were determined, Ea = 14.1 kcal mol-1, log (A/s-1) = 7.41.
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