反应详情

温度

70 °C

Sodium azide (80 mg, 1.2 mmol) was added to a solution of (6S,7aS)-6-Bromo-2-(4-trifluoromethoxy-phenyl)-hexahydro-pyrrolo[1,2-c]imidazol-3-one (350 mg, 1.0 mmol) in anhydrous DMF (10 mL), the mixture was heated to 70° C. and stirred for 2 hours. The mixture was cooled and poured into water (30 mL), extracted with ethyl acetate (3×20 mL), the organic layers was combined and washed with water (2×20 mL), brine (20 mL), dried over anhydrous sodium sulphate, filtered and concentrated. The residue was purified by silica gel column chromatography (eluting with petroleum ether/ethyl acetate=10:1) to give 260 mg (83%) of the title compound. 1H NMR (300 MHz, CDCl3): δ 7.59 (d, 2H, J=9.3 Hz), 7.19 (d, 2H, J=8.4 Hz), 4.33 (t, 1H, J=6.3 Hz), 4.13-3.98 (m, 3H), 3.75-3.72 (m, 1H), 3.15 (dd, 1H, J1=12.6 Hz, J2=2.1 Hz), 2.19 (dd, 1H, J1=13.2 Hz, J2=3.9 Hz), 1.73-1.63 (m, 1H).

1. temperatureThe mixture was cooled
2. extractionextracted with ethyl acetate (3×20 mL)
3. washwashed with water (2×20 mL), brine (20 mL)
4. dry with materialdried over anhydrous sodium sulphate
5. filtrationfiltered
6. concentrationconcentrated
7. customThe residue was purified by silica gel column chromatography (eluting with petroleum ether/ethyl acetate=10:1)