Oxidative Annulation of Diphenylpropanamides via In Situ Hyper-valent Iodine-Promoted Intramolecular C-N/C-O Bond Formation

An aryl iodide catalyzed intramolecular oxidative transformation of diphenylpropanamide derivatives is described that can readily afford the C-N/C-O coupling products in a single step. The speed of the 1,3-aryl iodide migration process determines the diversity of target compound generation in this reaction. This straightforward approach can be performed with the use of inexpensive and readily available catalyst, transition-metal-free, mild conditions and good functional group tolerance.