A rapid and easy procedure for direct conversion of TMS-ethers to their acetates catalyzed by cerium(IV) ammonium nitrate (CAN) immobilized on n-butylpyridinium tetrachloroferrate ([nbp]FeCl 4 ) as a room temperature ionic liquid under microwave irradiation was developed. This methodology is enough mild so that the acid sensitive groups such as methoxy, furyl or thiophenyl were remained intact. No side products were observed by this method.

The aryl aldehyde bisulfite adducts were deprotected to the parent aldehydes in n-butylpyridinium tetrachloroferrate as a catalyst and solvent with excellent yields and high chemoselectivity.