反应详情

温度

0 °C

To a solution of 8-(4-fluorophenyl)-N,N,2-trimethyl-3,6,7,8-tetrahydrochromeno[7,8-d]imidazole-5-carboxamide (52.0 mg, 0.147 mmol, Step 8) in N,N-dimethylformamide (1.5 mL), was added sodium hydride (7.1 mg, 0.18 mmol) at 0° C. and the mixture was stirred at 0° C. for 30 minutes. Then (3-bromopropoxy)(tert-butyl)dimethylsilane (48.4 mg, 0.191 mmol) was added to the mixture at 0° C. The mixture was allowed to warm to room temperature, stirred for 4 hours and left at the same temperature overnight. The reaction was quenched by saturated ammonium chloride aqueous solution. The mixture was extracted with ethyl acetate. The combined organic layers were washed with water and brine. It was dried over sodium sulfate and concentrated in vacuo. The residue was purified by preparative TLC eluting with hexane/ethyl acetate (1:1 and then 1:4) to afford the title compound as a brown oil (35.5 mg, 46%).

1. temperatureto warm to room temperature
2. stirringstirred for 4 hours
3. waitleft at the same temperature overnight
4. customThe reaction was quenched by saturated ammonium chloride aqueous solution
5. extractionThe mixture was extracted with ethyl acetate
6. washThe combined organic layers were washed with water and brine
7. dry with materialIt was dried over sodium sulfate
8. concentrationconcentrated in vacuo
9. customThe residue was purified by preparative TLC
10. washeluting with hexane/ethyl acetate (1:1