反应详情

温度

0 °C

To a solution of the product of step A (480 mg, 2 mmol) in MeOH (3 mL) was added NaBH4 (76 mg, 2 mmol) at 0° C. The reaction was stirred at 0° C. for 30 min. The reaction was quenched with saturated NH4Cl (1 mL) and water (5 mL), extracted with ethyl acetate (2×15 mL). The combined organic phase was dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure to obtain the title compound (460 mg, 95%) as a white solid which was used directly in the next step. 1H-NMR (600 MHz, DMSO-d6) δ 9.20 (s, 1H), 8.31-8.28 (m, 1H), 7.11-7.09 (m, 1H), 5.26 (t, J=6.0 Hz, 1H), 4.48 (d, J=6.0 Hz, 2H), 1.45 (s, 9H) ppm. MS: M/e 243 (M+1)+.

1. customThe reaction was quenched with saturated NH4Cl (1 mL) and water (5 mL)
2. extractionextracted with ethyl acetate (2×15 mL)
3. dry with materialThe combined organic phase was dried over anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure