Visible Light‐Promoted Recyclable Carbon Nitride‐Catalyzed Dioxygenation of β,γ‐Unsaturated Oximes

Abstract A visible‐light‐induced dioxygenation of β , γ ‐unsaturated oximes for the synthesis of diverse useful isoxazolines bearing a hydroxyl moiety was developed by employing graphitic carbon nitride (g‐C 3 N 4 ) as a heterogeneous photocatalyst under an air atmosphere. Noted that, the eminent advantages of this metal‐free protocol include step economy, easy operation, a recyclable photocatalyst, external reductant‐/oxidant‐free and mild reaction conditions. Additionally, mechanistic studies indicated hydroxyl radical was generated under the photocatalysis of g‐C 3 N 4 . magnified image