Results Initial experiments were carried out with aryl iodides adding palladium acetate as catalyst. The palladium (I1) acetate was reduced by the carbon monoxide in the reaction mixture. Little carbon monoxide was absorbed at 100'and at 1 atm unless a tertiary amine and an alcohol were added. We used n-butyl alcohol as the alcohol and tri-n-butylamine as the tertiary amine, since they boiled well above the reaction temperature. Generally, the ...