Aryl diazonium tetrafluoroborates have been coupled with arylboron compounds, carbon
monoxide, and ammonia to give aryl amides in high yields. A saturated N-heterocyclic carbene (NHC) ligand, H2IPr was used with palladium(II) acetate to give the active catalyst. A mechanism is
proposed for this novel four-component coupling reaction.
palladium cross-coupling - multi-component - carbonylative coupling - amides - N-heterocyclic
carbene