Process for preparing alpha -haloacetophenone derivative

摘要

The present invention provides processes for preparing alpha -halo(methylthio)acetophenone and alpha -halo (methylsulfonyl)acetophenone in an industrially simple and economically advantageous manner. In the invention, methylthioacetophenone is halogenated with a halogenating agent in the presence of an alcohol, giving alpha -halo(methylthio) acetophenone. Then the compound is oxidized with an oxidizing agent, giving alpha -halo(methylsulfonyl)acetophenone.