反应详情

To a magnetically stirred mixture of 1-(2-Chloro-4-methoxy-pyridin-3-yl)-3-[4-hydroxy-4-(3-trifluoromethylphenyl)-piperidine-1-carbonyl]-thiourea (100 mg, 0.20 mmol) in THF (10 mL) was added sodium hydride (10 mg, 0.25 mmole, 60% dispersion in mineral oil). The reaction is stirred at reflux overnight. TLC (80% ethyl acetate/hexane) indicated complete consumption of starting material. The reaction was poured into water and the aqueous layer was extracted with ethyl acetate. The resulting organic layers were washed with 2N HCl (2×) and saturated sodium chloride solution and then dried over magnesium sulfate. Purification by flash chromatography gave 4-Hydroxy-4-[3-(trifluoromethy)phenyl]piperidine-1-carboxylic acid (7-methoxy-thiazolo[5,4-b]pyridine-2-yl)-amide (20 mg, 0.04 mmole, 22% yield) as a light yellow solid. (LRMS for C20H19F3N4O3S (M+H)+ at m/z=452.

1. temperatureat reflux overnight
2. customconsumption of starting material
3. additionThe reaction was poured into water
4. extractionthe aqueous layer was extracted with ethyl acetate
5. washThe resulting organic layers were washed with 2N HCl (2×) and saturated sodium chloride solution
6. dry with materialdried over magnesium sulfate
7. customPurification by flash chromatography