Palladium catalysed queuing processes. Part 2:: Termolecular cyclization–anion capture employing carbon monoxide as a relay switch with in situ generated vinylstannanes

The palladium catalysed termolecular queuing processes involving aryl iodides, carbon monoxide (1 atm) and in situ generated vinylstannanes as terminating agents afford a variety of complex heterocyclic α,β-unsaturated ketones in good yield.