反应详情

361 mg (1.37 mmol) of methyl bromo(2-chlorophenyl)acetate were initially charged in 10 ml of acetonitrile, and 89 mg (1.37 mmol) of sodium azide were added. The mixture was stirred at RT for 1 h. 2.7 mg (0.14 mmol) of copper(II) acetate monohydrate and 569 mg (1.64 mmol) of the compound from Example 14A were then added. The resulting mixture was stirred at 50° C. for 48 h. The reaction mixture was then filtered through a little silica gel, the product being eluted with about 10 ml of ethyl acetate, and the filtrate was concentrated under reduced pressure. The crude product was purified by chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 8:1→6:1→4:1→2:1→1:1). This gave 496 mg (53% of theory) of the target compound.

1. stirringThe resulting mixture was stirred at 50° C. for 48 h
2. filtrationThe reaction mixture was then filtered through a little silica gel
3. washthe product being eluted with about 10 ml of ethyl acetate
4. concentrationthe filtrate was concentrated under reduced pressure
5. customThe crude product was purified by chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 8:1→6:1→4:1→2:1→1:1)