5'-CHLORO-2'-HYDROXY-4'-METHYLACETOPHENONE

5′-Chloro-2′-hydroxy-4′-methylacetophenone (5-chloro-2-hydroxy-4-methylacetophenone) may be used in the preparation of the following:

• chalcones, required for the synthesis of novel pyrazoline derivatives
• 5′-chloro-2′-hydroxy-4′-methyl-3-(2′′-thienyl)acrylophenone
• 6-chloro-3-hydroxy-7-methyl-2-(2-thienyl)-4H-chromen-4-one, a complexing agent used for the spectrophotometric determination of vanadium(V)

Preparation by reaction of acetic acid on 4-chloro-3- methylphenol with boron trifluoride at 70–100° (80–85%).

5′-chloro-2′-hydroxy-4′-methylacetophenone (5-Chloro-2-hydroxy-4-methylacetophenone) is a hydroxylated aromatic acetophenone. Its iodination by pyridinium iodochloride has been reported to afford 5-chloro-2-hydroxy-3-iodo-4-methylacetophenone.