Palladium catalyzed aminoalkynylation/alleneamination of ureatethered alkenes：access to imidazolidinones bearing alkyne and allene

A novel palladium-catalyzed aminoalkynylation/alleneamination of urea-tethered alkenes has been developed, offering an efficient strategy for the synthesis of imidazolidinones bearing alkyne and allene in moderate to good yields. The reaction exhibits broad substrate scope, excellent functional group tolerance and well synthetic versatility.