反应详情

温度

80 °C

4-Bromo-3-(trifluoromethyl)aniline (4.0 g, 16.7 mmol) was dissolved in isopropanol (20 mL), water (10 mL), and t-butylamine (5 mL). To the solution, potassium(trifluoro)vinylborate (4.0 g, 29.9 mmol), PdCl2(dppf)2.2-dichloromethane complex (300 mg, 0.37 mmol) were added. The resulting mixture was stirred under argon atmosphere at 80° C. for 20 hours and then concentrated. The residue was partitioned between water and ethyl acetate, and the organic layer was washed with saturated brine and concentrated under reduced pressure. The resulting product was purified by silica-gel column chromatography (n-hexane:ethyl acetate=6:1) to give 3-trifluoromethyl-4-vinylaniline (2.475 g, 79%) as a light-yellow oil.

1. addition2-dichloromethane complex (300 mg, 0.37 mmol) were added
2. concentrationconcentrated
3. customThe residue was partitioned between water and ethyl acetate
4. washthe organic layer was washed with saturated brine
5. concentrationconcentrated under reduced pressure
6. customThe resulting product was purified by silica-gel column chromatography (n-hexane:ethyl acetate=6:1)