反应详情

温度

50 °C

To a solution of compound 5 (12.56 g: 60 mmol) in dry DMF (150 mL) was added in small portions NaN3 (11.7 g: 180 mmol) with stirring over 30 min. The resulting solution was heated to 50° C. for 1 h and then stirred overnight at room temperature. Water (50 mL) was added with stirring, the solvent was removed, and the residue was extracted with ethyl acetate (2×175 mL). The combined organic layers were washed sequentially with water (2×50 mL) and brine (2×50 mL). The organic extract was dried over anhydrous sodium sulfate and evaporated to give compound 6 as a light yellow oil (10.54 g; 87% yield). 1H NMR (CDCl3-d6) δ 4.9 (s, 1H), 3.3 (m, 2H), 3.2 (m, 2H), 1.7 (m, 2H), 1.4 (s, 9H).

1. stirringstirred overnight at room temperature
2. stirringwith stirring
3. customthe solvent was removed
4. extractionthe residue was extracted with ethyl acetate (2×175 mL)
5. washThe combined organic layers were washed sequentially with water (2×50 mL) and brine (2×50 mL)
6. extractionThe organic extract
7. dry with materialwas dried over anhydrous sodium sulfate
8. customevaporated