Abstract A new protocol for the acylation of alcohols with anhydrides in the presence of Zn (ClO 4) 2· 6H 2 O as the catalyst is reported. The activity of Zn (ClO 4) 2· 6H 2 O has been proven to be superior to that exerted by dry Mg (ClO 4) 2 and by metal triflates. Its ...