2-氨基-2-(四氢-2H-吡喃-4-基)乙酸 乙酯

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 0.53 ml (4.5 mmol) benzylbromide, 0.85 g (4.5 mmol) ethyl (rac)-amino-(tetrahydropyran-4-yl)-acetate and 1.9 g (13.7 mmol) potassium carbonate in 10 mL DMF were stirred for 2 h at 100° C. After cooling the mixture was mixed with water and extracted three times with ethyl acetate. The combined organic phases were extracted with saturated, aqueous saline solution, three times with 0.5 M hydrochloric acid and once more with saturated saline solution. The combined aqueous phases were adjusted to pH 9 with conc. aqueous ammonia solution and extracted three times with dichloromethane. The combined organic phases were washed with saturated saline solution, dried and concentrated by rotary evaporation. After cooling the mixture extracted three times with ethyl acetate The combined organic phases were extracted with saturated, aqueous saline solution, three times with 0.5 M hydrochloric acid extracted three times with dichloromethane The combined organic phases were washed with saturated saline solution dried concentrated by rotary evaporation