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 a-halo(methyl-thio)acetophenone. Then the compound is oxidized with an oxidizing agent, giving .alpha.-halo(methylsulfonyl)acetophenone.