Sodium Formate → 3-Formylamino-2-hydroxy-benzoic Acid Methyl Ester

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Reaction Steps

To a solution of methyl-3-aminosalicylate (3.34 grams, 20 mmol) in concentrated formic acid (20 mL) was added solid sodium formate (1.36 grams, 20 mmol, 1 eq.) and the resulting suspension stirred under reflux for 2 hours. The precipitate was filtered at room temperature and washed with water until neutral. After drying on air, 3.595 grams (92%) light brown crystals were collected. M+196, M−194.

Provenance & Evidence