Palladium-catalyzed alkyne insertion and rearrangements to synthesize oxindoles from o-iodonitroheteroarenes and alkyne

A novel tandem reaction involving Pd (II)-catalyzed ortho−C−I bond functionalization, O-atom transfer, [1,2]-aryl shift and deoxygenation of o-iodonitroheteroarenes with alkynes, resulting in the synthesis of 3,3-disubstituted oxindoles, is described. This...