Acetic Anhydride → 4-Acetoxy-2-(4-methylphenyl)benzothiazole

Participants

Reaction Steps

The 4-hydroxy-2-(4-methylphenyl)benzothiazole (5.8 g) obtained in Example 1 was added to 58 ml of acetic anhydride and refluxed for 3 hours. After the reaction, the reaction mixture was dried under reduced pressure. The residue was washed with a small amount of cyclohexane, and recrystallized from cyclohexane to give 4.8 g of 4-acetoxy-2-(4-methylphenyl)benzothiazole.

Provenance & Evidence