反应详情

A mixture of (1R)-2-bromo-1-(3-bromoisoxazole-5-yl)ethanol (which was obtained in Example 119) (1.44 g, 5.31 mmol), potassium carbonate (1.46 g, 10.62 mmol) and acetone (30 mL) was stirred at ambient temperature for 48 hours. The reaction mixture was filtered, and the solvent was removed in vacuo. The residue was purified by flash chromatography (hexanes/chloroform/isopropyl alcohol 8/1.8/0.2) to give a colorless oil (0.774 g, 53% yield); 1H NMR (300 MHz, CDCl3) δ 3.17 (m, 1H), 3.21 (m, 1H), 3.99 (m, 1H), 6.38 (s, 1H).

1. filtrationThe reaction mixture was filtered
2. customthe solvent was removed in vacuo
3. customThe residue was purified by flash chromatography (hexanes/chloroform/isopropyl alcohol 8/1.8/0.2)