Acetic Anhydride → 3-Acetamido-4-methylbenzoic acid

참여 물질

반응 조건

반응 단계

A mixture of 3-amino-4-methylbenzoic acid (13) (27.23 g, 180.2 mmol) and acetic acid (190 mL) is heated to 60° C., and acetic anhydride (120 mL, 1300 mmol) is introduced to the reaction mixture over about 0.25 hours. The reaction mixture is then heated to reflux and stirred for about 30 minutes. The mixture is then cooled to room temperature, and the solid obtained is filtered, washed with water (100 mL), and dried to provide 3-(Acetylamino)-4-methylbenzoic Acid (14) as a light pink colored solid (26.37 g, 76% Yield).

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