反应详情

温度

150 °C

To a solution of ethyl 2-(bromomethyl)-3-(3-nitrophenyl)cyclopropane carboxylate (Preparation 23, 60 mg, 0.18 mmol) in N,N-dimethylformamide (2 ml) was added sodium hydrogen carbonate (30 mg, 0.36 mmol) and 3-phenylpropylamine (30 mg, 31 μl, 0.22 mmol). The mixture was heated to 150° C. for 1 hour, then cooled to room temperature and stirred for 16 hours. Water (30 ml) was added and the mixture was extracted with diethyl ether (2×50 ml). The combined extracts were concentrated in vacuo and the residue was purified by silica (5 g) column chromatography eluting with dichloromethane then 4:1 dichloromethane:ethyl acetate. Product-containing fractions were combined and concentrated in vacuo to give the title compound as a colourless glassy solid (55 mg, 90%).

1. temperaturecooled to room temperature
2. extractionthe mixture was extracted with diethyl ether (2×50 ml)
3. concentrationThe combined extracts were concentrated in vacuo
4. customthe residue was purified by silica (5 g) column chromatography
5. washeluting with dichloromethane
6. concentrationconcentrated in vacuo