Trimethylsilyldiazomethane → Methyl 4-iodo-2-methoxynicotinate

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

4-Iodo-2-methoxynicotinic acid (800 mg, 2.87 mmol) is dissolved in MeOH (7 mL) and cooled at 0° C. Trimethylsilyldiazomethane (9 mL, 2M in hexane, 4.5 mmol) is added slowly over 20 minutes. The reaction mixture is brought to room temperature and stirred for 16 hours. The reaction mixture is concentrated and purified by silica gel column chromatography using hexane:ethyl acetate as eluent to afford the desired compound. 1H NMR 400 MHz (DMSO-d6) δ 7.88 (d, 1H, J=5.6 Hz), 7.34 (d, 1H, J=5.6 Hz), 4.12 (s, 3H), 3.84 (s, 1H); MS m/z 294.1 (M+1).

Herkunft & Nachweise