Water → Methyl 6-chloro-4-(methylamino)pyridine-3-carboxylate

関与物質

反応条件

反応手順

40% Methylamine in water (0.847 mL, 9.78 mmol) was added slowly over 5 minutes at 0° C. to a solution of methyl 4,6-dichloronicotinate (0.40 g, 1.94 mmol) in MeCN (6 mL). The solution was stirred at 0° C. for 30 minutes then at room temperature for 2 hours. The reaction mixture was concentrated in vacuo onto silica gel. Gradient chromatography, eluting with 5% EtOAc:c-Hex over 5 column volume and 5-50% over 15 column volume, gave methyl 6-chloro-4-(methylamino)nicotinate (278 mg, 1.386 mmol, 71.4% yield) as a white solid.

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