反应详情

温度

0 °C

To a solution of 839 mg of the crude product from Step N in CH2Cl2 (20 mL) were added triphenylphosphine (525 mg, 2 mmol) and carbon tetrabromide (663 mg, 2 mmol) at 0° C. The solution was stirred at 0° C. for 1 hour and at rt for 15 hours. The solution was poured into EtOAc (100 mL). After the precipitate was removed, the filtrate was washed with H2O and brine, and dried over anhydrous MgSO4. Concentration afforded 302 mg of the title compound as a white solid.

1. customAfter the precipitate was removed
2. washthe filtrate was washed with H2O and brine
3. dry with materialdried over anhydrous MgSO4
4. concentrationConcentration