Process for preparing .alpha.-haloacetophenone derivative

Details Process for preparing .alpha.-haloacetophenone derivative Process for preparing .alpha.-haloacetophenone derivative

1997-03-27

1998-10-13

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

568 43, C07C31502

Patent

active

058213880

ABSTRACT:
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.

REFERENCES:
patent: 2763692 (1956-09-01), Gregory
patent: 3150187 (1964-09-01), Cavsllini et al.
patent: 4490534 (1984-12-01), Harrid
patent: 5326862 (1994-07-01), Radisson
1-(4-Alkanesulfonylphenacyl)-4-Arylpiperazines and Related Compounds; A New Series of Central Depressants, Z.J. Vejdelek, et al., Collection

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