反应详情

A solution of N-(2-chloro-4-methylpyrimidin-5-yl)acetamide (9 g, 46.06 mmol, 1.00 equiv, 95%), potassium acetate (3.3 g, 32.95 mmol, 0.72 equiv, 98%), acetic anhydride (17.27 g, 165.78 mmol, 3.60 equiv) and isoamyl nitrite (13.6 g, 116.24 mmol, 2.52 equiv, 98%) in chloroform (180 mL) was reflux overnight. The resulting mixture was washed with water, dried over anhydrous sodium sulfate and concentrated under vacuum to give 7 g (73%) of 1-[5-chloro-1H-pyrazolo[4,3-d]pyrimidin-1-yl]ethan-1-one as a white solid.

1. washThe resulting mixture was washed with water
2. dry with materialdried over anhydrous sodium sulfate
3. concentrationconcentrated under vacuum