反应详情

Morpholine (7.92 mL, 90.9 mmol) was added to a solution of 2-bromo-1-fluoro-4-nitrobenzene (10 g, 45.5 mmol) in acetonitrile (100 mL) and the mixture was heated under reflux for 6 h. Volatile material was removed by evaporation and the residue was diluted with water (100 mL) then extracted with ethyl acetate (2×100 mL). The organic extracts were combined, dried and concentrated to give the title compound (12.9 g, 99%) as a solid; 1H NMR δ 8.40 (1H, s), 8.20 (1H, d), 7.10 (1H, d), 3.80-3.70 (4H, m), 3.20-3.10 (4H, m); MS m/e MH+ 287.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 6 h
3. customVolatile material was removed by evaporation
4. additionthe residue was diluted with water (100 mL)
5. extractionthen extracted with ethyl acetate (2×100 mL)
6. customdried
7. concentrationconcentrated