反应详情

温度

25 °C

A suspension of the trifluoroacetic acid salt of 4-amino-piperidine-1-carboxylic acid (7-methoxy-thiazolo[5,4-d]pyrimidin-2-yl)-amide (prepared as in Example 83, 580 mg, 1.37 mmol), 4-fluoro-3-trifluoromethyl-benzoyl chloride (261 mL, 1.64 mmol) and triethylamine (573 μL, 4.11 mmol) in methylene chloride (15 mL) was stirred at 25° C. overnight. At this time, the reaction was diluted with water and was extracted with ethyl acetate. The organics were washed with a saturated aqueous sodium chloride solution and a saturated aqueous sodium bicarbonate solution, dried over sodium sulfate, filtered and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230-400 mesh, gradient elution 3:7 ethyl acetate/hexanes to 100% ethyl acetate) afforded 4-(4-fluoro-3-trifluoromethyl-benzoylamino)-piperidine-1-carboxylic acid (7-methoxy-thiazolo[5,4-d]pyrimidin-2-yl)-amide (21 mg, 30.6%) as an off-white solid; ES-HRMS m/e calcd for C20H18F4N6O3S (M+H)+ 499.1170, found 499.1170.

1. extractionwas extracted with ethyl acetate
2. washThe organics were washed with a saturated aqueous sodium chloride solution
3. dry with materiala saturated aqueous sodium bicarbonate solution, dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. washFlash chromatography (Merck Silica gel 60, 230-400 mesh, gradient elution 3:7 ethyl acetate/hexanes to 100% ethyl acetate)