反应详情

温度

0 °C

Dissolve 3-(4-bromo-2-chloro-benzyl)-1-(cis-4-hydroxy-cyclohexyl)-pyrrolidin-2-one (Example 134) (0.20 g, 0.52 mmol) in THF (10 mL) and cool to 0° C. Add NaH (0.062 g, 1.55 mmol, 60% wt.) and stir the reaction mixture for 1 hour at 0° C. Then add Mel (0.11 g, 0.78 mmol) and continue to stir the reaction mixture overnight until LC-MS shows the starting material has gone. Add water (10 mL) and extract the aqueous layer with EtOAc (3×50 mL). Combine the organic layers and dry with Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel, 20-50% of EtOAc/Hexane) to give 0.17 g (83%) of the title compound as colorless oil: MS (APCI-pos mode) m/z (rel intensity) 400.0 (70), 402.0 (100).

1. extractionAdd water (10 mL) and extract the aqueous layer with EtOAc (3×50 mL)
2. dry with materialCombine the organic layers and dry with Na2SO4
3. filtrationfilter
4. concentrationconcentrate
5. custompurify by flash column chromatography (silica gel, 20-50% of EtOAc/Hexane)