反应详情

3.18 g of 2-(2-bromophenyl)ethyl methanesulfonate, 6.2 g of 1-phenylmethanamine, 7.87 g of potassium carbonate and 65 cm3 of tetrahydrofuran are stirred under an inert atmosphere for 16 h under the reflux of the solvent. The reaction mixture is cooled to a temperature close to 20° C., then in ice. 100 cm3 of ethyl acetate and 200 cm3 of water are then added thereto. Stirring is continued for 5 min. The aqueous phase is extracted using ethyl acetate. The organic phases are combined, washed with a saturated aqueous solution of sodium chloride, dried over magnesium sulfate and concentrated using a rotary evaporator under reduced pressure (5 kPa). The 7.8 g of brown oil obtained are purified by flash chromatography over silica (column: 400 g; particle size: 15-40 μm; eluent: 100% dichloromethane to 90% dichloromethane/10% methanol gradient). After concentrating the fractions under reduced pressure, 2.49 g of N-benzyl-2-(2-bromophenyl)ethanamine are obtained.

1. temperaturereflux of the solvent
2. temperatureThe reaction mixture is cooled to a temperature
3. customclose to 20° C.
4. extractionThe aqueous phase is extracted
5. washwashed with a saturated aqueous solution of sodium chloride
6. dry with materialdried over magnesium sulfate
7. concentrationconcentrated
8. customa rotary evaporator under reduced pressure (5 kPa)