silyloxycyclopropane to iodonium salts in the presence of Pd(OAc)2 (2 mol %) and (4:1) to afford β-substituted ester. Alternatively, carbonylative coupling of silyloxypropane was carried out by slow addition of silyloxypropanes to iodonium salts under CO(1 atm) at room temperature in aqueous medium. The palladium-catalyzedcoupling of ketene trimethylsilyl acetals with iodonium salts is also described.