反应详情

温度

70 °C

To a solution of (R)-3-[4-(4-methoxy-3-methyl-benzoyl)-piperidin-1-yl]-pyrrolidin-2-one (6.32 mmol, 2.0 g) and chloroacetonitrile (6.32 mmol, 0.48 g) in THF (50 mL) was added sodium hydride (60%, 9.48 mmol, 0.38 g) and heated to 70° C. for 30 min. The reaction was allowed to cool to ambient temperature and dried under vacuum. Flash column chromatography (silica) was performed eluting with ethyl acetate to 20% MeOH/ethyl acetate and provided the title compound as an off-white residue (1.1 g, 49% yield). Calculated molecular formula=C20H25N3O3=355.4406. found MS (ESI) m/e 356.1978 (M+H+); analytical RP-HPLC (Novapak 150×3.9 mm C18 column: mobile phase: 10-90% acetonitrile/water with 0.1% TFA, at 2 mL/min over 5 min.) retention time=2.591 min.

1. temperatureto cool to ambient temperature
2. customdried under vacuum
3. washFlash column chromatography (silica) was performed eluting with ethyl acetate to 20% MeOH/ethyl acetate