反应详情

温度

0 °C

To a solution of Intermediate 8.1 (200 mg, 0.517 mmol) in 3 mL THF at 0° C., was added BuLi (1.4 M in THF, 0.406 mL, 0.569 mmol). The mixture was stirred at 0° C. for 25 min, then a solution of Intermediate 7.2 (117 mg, 0.517 mmol) in 1 mL THF was added dropwise. The mixture was stirred at 0° C. for 30 min, then was quenched with sat. NH4Cl. The mixture was diluted with EtOAc, washed with H2O and brine, dried (Na2SO4) and concentrated. The crude product was purified by flash chromatography (0 to 40% EtOAc/hexanes gradient) to afford 240 mg of Intermediate 25.1 as a colorless solid.

1. stirringThe mixture was stirred at 0° C. for 30 min
2. customwas quenched with sat. NH4Cl
3. additionThe mixture was diluted with EtOAc
4. washwashed with H2O and brine
5. dry with materialdried (Na2SO4)
6. concentrationconcentrated
7. customThe crude product was purified by flash chromatography (0 to 40% EtOAc/hexanes gradient)