Abstract: The treatment of aryl acyloin ( a-hydroxyketone) O-alkyl and O-phenyl
derivatives with 2¨C3 equiv of Zn and 1¨C2 equiv of NH4Cl in ethanol, refluxing for
20¨C120 min, gave the corresponding ketones with excellent yields. Further,
a, b-epoxy ketones can be efficiently transformed to b-hydroxy ketones, and
2,2-dialkoxy-1-phenyl ketone also can be dealkoxylated to 1-phenyl ketone.