反应详情

2-{(1S,2S)-2-[1-(5-chloropyrimidin-2-yl)piperidin-4-yl]cyclopropyl}ethanamine (29 mg, 0.10 mmol) from step 3 of this example was dissolved in DMF (0.4 mL), cesium carbonate (168 mg, 0.52 mmol) was added, stirred at room temperature for 10 minutes, then cooled down to 0° C. 6-chloro-2-methylpyrimidine-4-carbonitrile (17.5 mg, 0.114 mmol; from step 4 of this example) was added in DMF (0.1 mL) via syringe. Reaction was kept at 0° C. for 30 minutes, then warmed up to room temperature for 1 hour. Water (50 mL) was added, extracted with EtOAc (50 mL×2), second wash with Brine (20 mL). The combined organic phase was dried by magnesium sulfate, filter, concentrated and purified by column chromatography through a 40 gram RediSep Rf™ silica gel cartridge eluting with 17% acetone/hexanes to give the title compound as a pale yellow solid.

1. temperaturecooled down to 0° C
2. customReaction
3. waitwas kept at 0° C. for 30 minutes
4. temperaturewarmed up to room temperature for 1 hour
5. extractionextracted with EtOAc (50 mL×2)
6. washsecond wash with Brine (20 mL)
7. dry with materialThe combined organic phase was dried by magnesium sulfate
8. filtrationfilter
9. concentrationconcentrated
10. custompurified by column chromatography through a 40 gram RediSep Rf™ silica gel cartridge
11. washeluting with 17% acetone/hexanes