Visible-Light-Induced Regioselective Radical Oxo-Amination of Alkenes with O₂ as the Oxygen Source

An efficient and novel visible-light-inducedoxo-amination of terminalalkenes for the construction of & alpha;-amino ketones with easilyaccessible and green O-2 as the oxygen source has been developed.The transformation possesses the advantages of operational simplicity,a broad substrate scope, high atom economy, and mild reaction conditions.The mechanistic studies reveal that an energy transfer process probablyoccurs in the initial stage, and the reaction proceeds via & beta;-scissionof the alkoxyl radical species.