反应详情

Methylamine hydrochloride (275 mg, 4.08 mmol) and diisopropylethylamine (601 mg, 4.66 mmol) were sequentially added to a solution of 2-(3-methoxymethoxy-phenyl)-oxirane (210 mg, 1.16 mmol) in anhydrous methanol (5 mL). The resulting mixture was maintained at ambient temperature for about 12 hours. Following standard extractive workup with ethyl acetate, the crude product was purified by flash column chromatography on silica gel (1×15 cm, dichloromethane/methanol/NH4OH=90/8/1 elution) to give the title product (49 mg, 20%). 1H NMR (300 MHz, CDCl3) δ 7.26-7.23 (m, 1H), 7.06 (s, 1H), 7.00 (d, 1H, J=7.5 Hz), 6.95 (d, 1H, J=6.9 Hz), 5.18 (s, 2H), 4.71 (d, 1H, J=5.7 Hz), 3.48 (s, 3H), 2.84-2.62 (m, 2H), 2.46 (s, 3H); LC-MS: m/z=212 (MH)+.

1. customthe crude product was purified by flash column chromatography on silica gel (1×15 cm, dichloromethane/methanol/NH4OH=90/8/1 elution)