Radical carbooxygenations of alkenes using hydroxamic acids

A radical-mediated approach to alkene carbooxygenation using hydroxamic acids is described. These transformations represent rare examples of direct carbooxygenations, and deliver versatile functionality to the unsaturated substrate. Included in this study are alkene oxyallylation, oxycyanation, and formal oxyacylation processes. These unique reactions capitalize on the reactivity of amidoxyl radicals in alkene additions.