A One-Pot Method Synthesis of α-Chloroketone Dimethyl Acetals

Abstract

A new one-pot method has been developed for the direct preparation of α-chloroketone dimethyl acetals from ketones using ammonium chloride as the source of chlorine and potassium monoperoxysulfate as the oxidant in the presence of trimethyl orthoformate in methanol at room temperature. Ketones which have electron-withdrawing groups on the aryl rings gave the corresponding α-chloroketone dimethyl acetals in moderate to good yields.