Al(HSO4)3 as an efficient catalyst for acetalization of carbonyl compounds under heterogeneous or solvent -free conditions

Abstract

Al(HSO4)3 as a solid acid was applied for acetalization of carbonyl compounds at room temperature and under solvent-free conditions with good to excellent yields. The cheapness and availability of this reagent with easy procedure and work-up make this method attractive for the organic synthesis. ©2005 Sociedade Brasileira de Química.