反应详情

To a stirred solution of (4-(aminomethyl)pyridin-2-yl)(4-(4-chlorophenoxy)piperidin-1-yl)methanone (25 mg, 0.072 mmol. Example 321), N,N-diisopropylethylamine (0.038 mL, 0.22 mmol) in dichloromethane (1 mL) was added pivaloyl chloride (0.011 mL, 0.087 mmol) at room temperature. After stirring at room temperature for 2 hours, the mixture was poured into water (3 mL). This was extracted with ethyl acetate (4 mL) and washed with water (3 mL). The organic layer was dried over sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica-gel column chromatography (NH-gel, eluting with ethyl acetate) and then preparative LC-MS to give 14.0 mg (45% yield) of the title compound.

1. extractionThis was extracted with ethyl acetate (4 mL)
2. washwashed with water (3 mL)
3. dry with materialThe organic layer was dried over sodium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by silica-gel column chromatography (NH-gel, eluting with ethyl acetate)