Reaktion #48901

Reaktionsgleichung

ethyl acetate

Methylamine hydrochloride

diisopropylethylamine

2-(3-methoxymethoxy-phenyl)-oxirane

→

title product

Ausbeute 20.0%

1-(3-Methoxymethoxy-phenyl)-2-methylamino-ethanol

Ausbeute 20.0%

Lösungsmittel

methanol

Reaktionsbedingungen

Aufarbeitung

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

Vorschrift

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)+.

Quelle