反应 #1833210

反应方程式

N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-((3,3,3-trifluoropropyl)thio)propanamide

hydrogen peroxide

→

title compound

收率 95.2%

N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-((3,3,3-trifluoropropyl)sulfinyl)propanamide

收率 95.2%

溶剂

hexafluoroisopropanol

反应条件

后处理

1. 1
   其他It was quenched with saturated sodium sulfite solution
2. 2
   萃取extracted with CH2Cl2

实验过程

To a solution of N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-((3,3,3-trifluoropropyl)thio)propanamide (I) (500 mg, 1.229 mmol) in hexafluoroisopropanol (5 mL) stirring at room temperature was added 30% hydrogen peroxide (523 mg, 4.92 mmol). The solution was stirred at room temperature for 15 minutes. It was quenched with saturated sodium sulfite solution and extracted with CH2Cl2. Silica gel chromatography (0%-10% MeOH/CH2Cl2) gave the title compound as white semi-solid (495 mg, 95%): IR (thin film) 1660 cm−1; 1H NMR (400 MHz, CDCl3) δ 8.96 (d, J=2.4 Hz, 1H), 8.64 (dd, J=4.7, 1.4 Hz, 1H), 8.07-8.00 (m, 2H), 7.46 (ddd, J=8.3, 4.8, 0.7 Hz, 1H), 3.85-3.61 (m, 2H), 3.23-3.08 (m, 1H), 3.03-2.76 (m, 3H), 2.74-2.52 (m, 4H), 1.18 (t, J=7.2 Hz, 3H); ESIMS m/z 423 ([M+H]+).

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