Abstract In relation to the mechanism of palladium-catalyzed carbonylation of aryl iodides to give α-keto esters, the carbonylation reactivity of some palladium complexes such as RPdIL 2 (I: R= C 6 H 5, L= P (C 6 H 5) 3; II: R= C 6 H 5 CO, L= P (C 6 H 5) 3) and C 6 H 5 COPd [ ...