反应详情

温度

0 °C

To a solution of intermediate 8.1 (1.00 g, 2.59 mmol) in 20 mL THF at 0° C., was added BuLi (1.4 M, 2.03 mL, 2.85 mmol). The mixture was stirred for 30 min at 0° C., then a solution of 3-(tert-butyldimethylsilyloxy)-5-ethoxy-2-fluorobenzaldehyde (773 mg, 2.59 mmol) in 2 mL THF was added dropwise. The mixture was stirred at 0° C. for 30 min, quenced with sat. NH4Cl and diluted with EtOAc. The organic phase was washed with H2O and brine, dried (Na2SO4) and concentrated. The crude product was purified by flash chromatography (0 to 30% EtOAc/hexanes, gradient) to afford 1.50 g (80%) of Intermediate 123.1 as a pale yellow solid.

1. stirringThe mixture was stirred at 0° C. for 30 min
2. washThe organic phase was washed with H2O and brine
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated
5. customThe crude product was purified by flash chromatography (0 to 30% EtOAc/hexanes, gradient)