反应详情

温度

75 °C

Methanesulfonic acid 3-(5-bromo-pyridin-2-yl)-4,5-dihydro-isoxazol-5-ylmethyl ester (30.5 g, 90.77 mmol) was added to dimethyl formamide (50 ml) followed by addition of sodium azide (11.8 g, 181.5 mmol). The mixture was heated to 75° C. for five hours and then added to aqueous sodium chloride (100 ml) followed by extraction with ethyl acetate (3×200 ml). The organic layers were combined, dried over sodium sulfate, and concentrated in vacuo to yield the desired product (15 g).

1. extractionfollowed by extraction with ethyl acetate (3×200 ml)
2. dry with materialdried over sodium sulfate
3. concentrationconcentrated in vacuo