Palladium-catalyzed difluoroalkylative carbonylation of unactivated alkenes toward γ-Lactams

γ-Lactams are important core structure found in various natural and biologically active compounds. And the introducing of difluoromethylene group into a molecule can change its physical, chemical, and biological properties. As carbonylation chemistry represent a powerful and efficient method for the synthesis of carbonylated compounds, we report here an efficient procedure for the construction of difluoroalkylative γ-lactams via palladium-catalyzed carbonylative cyclization of alkenes. The desired γ-lactams were produced in moderate to good yields under relatively mild conditions.