Copper(I)‐Catalyzed Decarboxylative N‐Phosphorylation: Modular Preparation of N‐Acyl Iminophosphoranes Using Dioxazolones and Phosphines

Abstract Dioxazolones and phosphines have been used to access N ‐acyl iminophosphoranes in copper(I) catalysis under simple thermal conditions. The synthetic utility of this protocol is demonstrated by a broad range of substrates with an excellent atom‐economy. The optimization process showed that copper demonstrated as catalytic amount toward the targeted transformation. Functionalization studies of N ‐acyl iminophosphoranes were also conducted. Our reaction protocol is compatible with an example of a bioactive motif‐containing N ‐acyl iminophosphorane analogue.