Citric Acid → Methyl 2-amino-4-methoxy-3-methylbenzoate

참여 물질

반응 단계

To a solution of 2-amino-4-methoxy-3-methyl benzoic acid (3.1 g, 17.1 mmol) in dry DMF (40 ml) was added potassium carbonate (2.4 g, 17.1 mmol) and the mixture was stirred at room temperature for 30 minutes. Methyl iodide (3.1 g, 22 mmol) was added and the mixture was stirred for three hours at room temperature. A 5% aqueous solution of citric acid was added and the mixture was extracted three times with ethyl acetate. The organic phase was washed with water, dried with sodium sulfate and evaporated under reduced pressure. The product was isolated by column chromatography on silica gel eluted with hexane-ethyl acetate which gave the title compound (2.75 g).

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