Site-specific allylic C–H bond functionalization with a copper-bound N-centred radical

Methods for selective C–H bond functionalization have provided chemists with versatile and powerful toolboxes for synthesis, such as the late-stage modification of a lead compound without the need for lengthy de novo synthesis1–5. Cleavage of an sp3 C–H bond via hydrogen atom transfer (HAT) is particularly useful, given the large number of available HAT acceptors and the diversity of reaction pathways available to the resulting radical...