Some years ago we reported evidences that the oxidation of a variety of organic compounds (hydrocarbons, alcohols, ethers, aldehydes, etc.) by dioxiranes 1 and peracids 2 can be explained by radical mechanism in clear contrast with the widely accepted 3 and 4 mechanism of 'concerted oxenoid oxygen insertion'. Our interpretation 1 and 2 involves a 'molecule-induced homolysis' in which the transition states are related to the hydrogen abstractions leading ...