反应详情

温度

0 °C

A solution of the product from Step A (0.132 g; 0.319 mmol) in TB (3 mL) cooled to 0° C. was treated with 1 M solution of lithium bis(trimethylsilyl)amide in THF (701 μL; 0.701 mmol) and stirred at 0° C. under nitrogen for 15 minutes. The reaction mixture was warmed to room temperature and then stirred for an additional 15 minutes. The reaction mixture was partitioned between EtOAc and 10% NaHSO4 aqueous solution. The organic layer was washed twice with saturated NaHCO3 solution, brine, dried (Na2SO4), filtered, and concentrated in vacuo. Purification by MPLC (silica gel; 0% to 30% ethyl acetate-hexane gradient) gave the title compound. HPLC/MS: 413.9 (M+1), 415.9 (M+3); Rt=4.50 min.

1. temperatureThe reaction mixture was warmed to room temperature
2. stirringstirred for an additional 15 minutes
3. customThe reaction mixture was partitioned between EtOAc and 10% NaHSO4 aqueous solution
4. washThe organic layer was washed twice with saturated NaHCO3 solution, brine
5. dry with materialdried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customPurification by MPLC (silica gel; 0% to 30% ethyl acetate-hexane gradient)