One-step method for preparing alpha-halogenated acetophenone glycol ketal compound

The invention discloses a one-step method for preparing an alpha-halogenated acetophenone glycol ketal compound by acetophenone. The method is characterized in that acetophenone, halogenated reagents and glycol are simultaneously subjected to alpha-halogenating reaction and condensation reaction with the glycol by one step to obtain the alpha-halogenated acetophenone glycol ketal compound. According to the one-step method for preparing the alpha-halogenated acetophenone glycol ketal compound, two steps of original reactions are simplified to one step, other catalysts and dehydrating agents are not required, reaction conditions are gentle, the yield is high, costs are saved, the operation is convenient, and the post-processing is simple.