Fig. 2: Background of current work and reaction design.
From: Allylic C–H oxygenation of unactivated internal olefins by the Cu/azodiformate catalyst system

a Transition metal-catalyzed allylic C–H etherification. b Our Cu(I)/azodiformate catalyst system. c Our strategy. d Synthesis of structurally diverse medium-sized and macrocyclic rings.