Highly Stereoselective Synthesis of Imidazolidines through the Palladium(0)‐Catalyzed Three‐Component Reaction of 2,3‐Allenylamines, Organic Halides, and Imines

A new and efficient synthesis of polysubstituted imidazolidines using Pd(0)-catalyzed double-addition-cyclization of 2,3-allenyl amines with aryl iodides and imines. This catalytic reaction afforded the desired products in good yields with high diastereoselectivity.