Fig. 1: Pd-Catalyzed migratory cycloannulation reaction.

a Bioactive azaheterocycle containing drugs and natural products. b Transition metal-catalyzed [n + 2] cycloannulation with alkenes. c Transition metal-catalyzed migratory cycloannulation with unactivated alkenes. d Pd-Catalyzed migratory cycloannulation with alkenes for the synthesis of azaheterocycles.