反応 #45335

反応方程式

[3-amino-5-(trifluoromethyl)phenyl]methanol

t-butyl nitrite

CH2I2

→

[3-iodo-5-(trifluoromethyl)phenyl]methanol

溶媒

反応条件

後処理

1. 1
   温度was maintained at this temperature for 30 minutes
2. 2
   温度The reaction was then cooled to room temperature
3. 3
   その他purified with 100% hexanes to 25% EtOAc/hexanes

実験手順

[3-amino-5-(trifluoromethyl)phenyl]methanol (500 mg, 5.2 mmol) was suspended in CH2I2 (5 mL) and t-butyl nitrite (622 μL, 5.2 mmol) was added dropwise by syringe. The reaction was heated slowly to 100° C. and was maintained at this temperature for 30 minutes. The reaction was then cooled to room temperature, diluted with hexanes (50 mL), loaded on a silica gel column, and purified with 100% hexanes to 25% EtOAc/hexanes to afford [3-iodo-5-(trifluoromethyl)phenyl]methanol. Rf=0.19 (15% EtOAc/hexanes). 1H NMR (CDCl3, 500 MHz) δ 7.91 (s, 1H), 7.87 (s, 1H), 7.59 (s, 1H), 4.73 (d, J=4.9 Hz, 2H), 1.86 (t, J=5.6 Hz, 1H).

出典