Oxidation of Cycloalkanols to the Corresponding Cycloalkanones with Chlorine in the Presence of Nitroxide Radical as a Mediator

Abstract
A method for the oxidation of cyclic alcohols to the corresponding cyclic ketones with 2,2,6,6-tetramethyl-1-piperidinyloxyl (a mediator) and chlorine is described. This oxidation involves an oxoaminium salt, formed from the nitroxide radical and chlorine, which oxidizes cyclic alcohols to give the corresponding ketones in good yields.