Palladium complexes immobilized onto generation 0−3 PAMAM dendrimers supported on silicawere used as catalysts for the carbonylation of iodobenzene in methanol to form methyl benzoate.High yields were obtained and the catalyst was recycled 4−5 times without significant loss ofactivity. The carbonylation reaction was found to be applicable to a variety of iodoarenes regardlessof the nature of the substituent.