Hypervalent Iodine(III)-Promoted Rapid Cascade Reaction of Quinoxalinones with Unactivated Alkenes and TMSN3

The first example of rapidly three-component cascade reaction of quinoxalinones with unactivated alkenes and TMSN3 under mild condition has been described. This approach provides a practical solution for the rapid modification of quinoxalinones and enables new planning strategies for the synthesis of bioactive organoazides. A radical mechanism is responsible for this three-component transformation.