反应详情

温度

100 °C

In a sealed tube a mixture of enantiomer E1 of 3-(3,5-difluorophenyl)pyrrolidin-3-ol (0.14 g, 0.70 mmol), acetonitrile (4 mL), potassium carbonate (0.09 g, 1.75 mmol) and iodoethane (0.12 g, 0.77 mmol) was heated under microwave irradiation at 100° C. for 5 minutes. Water (30 mL) was added and the aqueous phase extracted with ethyl acetate (2×50 mL), the combined organic phase was dried (MgSO4) and evaporated. Purification by flash chromatography on silica gel (ethyl acetate/methanol, 2:1 to 1:1) gave the title compound (0.11 g). [α]D=+18.7° (methanol). The amine was converted to the oxalic acid salt and recrystallized from ethanol/diisopropyl ether: M.p. 137-139° C.; MS m/z (relative intensity, 70 eV) 227 (M+, 19), 212 (15), 141 (15), 127 (15), 71 (bp).

1. extractionthe aqueous phase extracted with ethyl acetate (2×50 mL)
2. dry with materialthe combined organic phase was dried (MgSO4)
3. customevaporated
4. customPurification by flash chromatography on silica gel (ethyl acetate/methanol, 2:1 to 1:1)