反应详情

温度

25 °C

To a mixture of 3-(4-amino-2-(trifluoromethyl)phenyl)-2,2-dimethylpropan-1-ol (300 mg, 1.213 mmol) in DCM (150 mL) was added imidazole (124 mg, 1.820 mmol) and TBSCl (219 mg, 1.456 mmol). Then the mixture was stirred at 25° C. for 5 h. The mixture was filtered and the filtrate was concentrated. The crude material was purified by preparative TLC (PE/EA=2:1, Rf=0.5) to yield a light yellow solid of 4-(3-((tert-butyldimethylsilyl)oxy)-2,2-dimethylpropyl)-3-(trifluoromethyl)aniline (350 mg, 0.930 mmol, 77.0% yield): 1H NMR (400 MHz, CD3Cl) δ: 7.14 (d, J=8.4 Hz, 1H), 6.86 (d, J=2.8 Hz, 1H), 6.70 (dd, J=2.8, 8.4 Hz, 1H), 3.20 (s, 2H), 2.62 (d, J=1.2 Hz, 2H), 0.87 (s, 9H), 0.73 (s, 6H), 0.00 (s, 6H); ES-LCMS m/z 362 (M+H).

1. filtrationThe mixture was filtered
2. concentrationthe filtrate was concentrated
3. customThe crude material was purified by preparative TLC (PE/EA=2:1, Rf=0.5)