Palladium‐Catalyzed Sequential C−H Activation/Amination of 2‐Iodobiphenyls with Benzoisoxazoles for Synthesis of Carbazoles

A coupling reaction of 2‐iodobiphenyl with benzoisoxazole under the cooperative catalysis of Pd(CH3CN)2Cl2 and P(4‐F−Ph)3 is disclosed. The reaction proceeds via intramolecular C−H activation/N−O cleavage/migratory insertion sequence to give an array of N‐arylcarbazoles with an aldehyde or a ketone. The employment of benzoisoxazoles as an amination agent obviates the need for stoichiometric amount of oxidants.