反应详情

温度

0 °C

To a solution of N,2-dimethyl-N-(methyloxy)-6-(4-morpholinyl)-1-(1-naphthalenylmethyl)-1H-benzimidazole-4-carboxamide (82 mg, 0.184 mmol) in Tetrahydrofuran (THF) (10 mL) was added a 3.0 M solution of methylmagnesium chloride (0.123 mL, 0.369 mmol) in THF at 0° C. The resulting reaction mixture was stirred at 0° C. for 2 h and then quenched very carefully with saturated aqueous ammonium chloride. The mixture was diluted with ethyl acetate (50 mL) and the aqueous phase was extracted with ethyl acetate (50 mL×2). The combined organic phases were washed with brine (50 mL), dried over (MgSO4), and filtered. The solution was concentrated under reduced pressure. The crude product was purified on a silica column (40˜60% EtOAc/Hexane) to give the product (46 mg, 59%). 1H NMR (400 MHz, DMSO-d6) δ ppm 2.47 (s, 3H), 3.00 (s, 3H), 3.02-3.10 (m, 4H), 3.59-3.73 (m, 4H), 6.06 (s, 2H), 6.33 (d, J=6.82 Hz, 1H), 7.21-7.42 (m, 3H), 7.52-7.76 (m, 2H), 7.86 (d, J=8.34 Hz, 1H), 8.02 (d, J=7.33 Hz, 1H), 8.25 (d, 1H). MS (ES+) m/e 399.9[M+H]+.

1. customThe resulting reaction mixture
2. customquenched very carefully with saturated aqueous ammonium chloride
3. additionThe mixture was diluted with ethyl acetate (50 mL)
4. extractionthe aqueous phase was extracted with ethyl acetate (50 mL×2)
5. washThe combined organic phases were washed with brine (50 mL)
6. dry with materialdried over (MgSO4)
7. filtrationfiltered
8. concentrationThe solution was concentrated under reduced pressure
9. customThe crude product was purified on a silica column (40˜60% EtOAc/Hexane)