반응 #624613

반응 방정식

ammonium chloride

4-fluorobenzonitrile

4-(trifluoromethyl)-1H-pyrazole

sodium hydride

→

4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)benzonitrile

수율 72.3%

용매

N,N-dimethylformamide

반응 조건

후처리

1. 1
   온도the reaction was heated to 80° C. overnight
2. 2
   추출the mixture extracted with ethyl acetate
3. 3
   건조The organic layer was dried over sodium sulfate
4. 4
   여과filtered
5. 5
   농축concentrated
6. 6
   기타Purification by column chromatography

실험 절차

To a 0° C. solution of 4-(trifluoromethyl)-1H-pyrazole (1 g, 7 mmol) in N,N-dimethylformamide (10 mL) was added 60 wt % sodium hydride (132 mg, 3.31 mmol). The mixture was stirred at 0° C. for 30 minutes, 4-fluorobenzonitrile (979 mg, 8.08 mmol) was added and the reaction was heated to 80° C. overnight. Saturated ammonium chloride was added and the mixture extracted with ethyl acetate. The organic layer was dried over sodium sulfate, filtered and concentrated. Purification by column chromatography gave 4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)benzonitrile (1.2 g, 72%). 1H NMR (400 MHz, CD3OD, δ): 8.84 (s, 1H), 7.96 (s, 1H), 7.95 (d, 2H), 7.78 (d, 2H).

출처