Hossein A. Oskooie, Bita Baghernezhad, Majid M. Heravi* and Y. Sh. Beheshtiha Department of Chemistry, School of Science, Azzahra University, Vanak, Tehran, Iran ... Alcohols and phenols were efficiently acylated with acetic anhydride in the presence of vanadyl sul- fate (VOSO4.3H2O) at room temperature in high yields. ... Keywords: Vanadyl sulfate; Acylation; Acetic anhydride; Solvent free; Reusable catalyst. ... INTRODUCTION The acylation of ...