Cooperative Photoredox and Cobalt‐catalyzed Acceptorless Dehydrogenative Functionalization of Cyclopropylamides towards Allylic N,O‐Acyl‐acetal Derivatives

We disclose herein a novel photoredox and cobalt co‐catalyzed ring‐opening/acceptorless dehydrogenative functionalization of mono‐donor cyclopropanes, which providing a sustainable and atom‐economic approach to rapidly assemble a wide range of allylic N,O‐acyl‐acetal derivatives. The optimized conditions accommodate assorted cycloalkylamides and primary, secondary and tertiary alcohols, with applications in late‐stage functionalization of pharmaceutically relevant compounds, stimulating the further utility in medicinal chemistry. Moreover, selective nucleophilic substitutions with various carbon nucleophiles were succeed in a one‐pot fashion, offering a reliable avenue to access some cyclic and acyclic derivatives.