反应详情

温度

-40 °C

To an ice cold solution of lithium aluminum hydride (0.048 g, 1.33 mmol, 4.0 eq) in tetrahydrofuran (10 mL) to −40° C. is added a solution of 2,2-dichloro-N-((1R,2S)-1-(4-(6-cyanopyridin-3-yl)phenyl)-3-fluoro-1-hydroxypropan-2-yl)acetamide (0.13 g, 0.34 mmol) in tetrahydrofuran (5 mL) at −40° C. Further lithium aluminum hydride is added (0.012 g, 0.33 mmol) three times and reaction mixture is stirred at −40° C. for 4 hours. The reaction mixture is quenched with saturated aqueous sodium sulphate and stirred for 15 minutes followed by filtration. The filtrate is evaporated in vacuo and the crude material purified by column chromatography on silica gel using methonol/CH2Cl2 and ammonia to afford title compound (43 mg): 1H NMR (400 MHz, CDCl3) δ: 4.20-4.24 (m, 2H), 4.27-4.29 (m, 0.5H), 4.39-4.43 (m, 0.5H), 4.56-4.59 (m, 1H), 4.67-4.69 (m, 0.5H), 4.89-4.90 (m, 1H), 5.99 (d, J=4.2 Hz, 1H), 6.52 (s, 1H), 7.46-7.48 (m, 3H), 7.64-7.69 (m, 3H), 8.06-8.10 (m, 1H), 8.63 (d, J=8.76 Hz, 1H). LC-MS (m/z): [M+H]=386.10.

1. custom(0.012 g, 0.33 mmol) three times and reaction mixture
2. customThe reaction mixture is quenched with saturated aqueous sodium sulphate
3. stirringstirred for 15 minutes
4. filtrationfollowed by filtration
5. customThe filtrate is evaporated in vacuo
6. customthe crude material purified by column chromatography on silica gel using methonol/CH2Cl2 and ammonia