反应详情

Dissolve 3-{[3-(3-fluoro-pyridin-4-yl)-5-methyl isoxazole-4-carbonyl]-amino}cyclo-hexanecarboxylic acid ethy ester (0.70 g, 1.87 mmol) in N,N-dimethyl-formamide (10 mL0 at ambient temperature under a nitrogen atmosphere. Add a solution of potassuim bis(trimethylsilyl)amide (0.5 M in toluene, 4.11 mL, 2.06 mmol) and stir for 20 min. at ambient temperature. Quench with water and follow by adding solid sodium chloride. Extract with ethyl acetate and wash the combined extracts with water and dry over sodium sulfate. Concentrate and elute over silica gel using methanol/dichloromethane, allowing for the isolation of 656 mg (99%) of the desired product as a light solid. MS(ES): (M+1)+ 356.2, 357.2 m/z.

1. customQuench with water
2. additionby adding solid sodium chloride
3. extractionExtract with ethyl acetate
4. washwash the combined extracts with water
5. dry with materialdry over sodium sulfate
6. concentrationConcentrate
7. washelute over silica gel