反应详情

To a solution of 5-bromo-4-methylnicotinic acid (223.4 mg, 1.034 mmol) in methylene chloride (3.0 mL, 47 mmol) and methanol (3.0 mL, 74 mmol) was added 2.0 M of trimethylsilyldiazomethane in ether (0.70 mL). The reaction mixture was stirred at room temperature for one hour, and then 2.0 M of tTrimethylsilyldiazomethane in ether (0.50 mL) was added. After an additional two hours, the crude reaction mixture was evaporated in vacuo to yield 237.2 mg (100%) of methyl 5-bromo-4-methylnicotinate which was carried forward without further purification. LCMS (ESI): M+H=230.2; 1H NMR (400 MHz, DMSO-d6) δ 8.86 (s, 1H), 8.82 (s, 1H), 3.89 (s, 3H), 2.58 (s, 3H).

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