反应详情

Method K—Step a To a mixture of (R)-1-[4-Chloro-3-(5-fluoro-1H-benzoimidazol-2-yl)-phenyl]-piperidine-3-carboxylic acid hydrochloride (obtained as described in general method 3,4, step e) (0.01 g, 0.27 mmol) in dcm (2 mL), HATU (0.10 g, 0.28 mmol), TEA (0.08 mL, 0.56 mmol) and 2-morpholinoethylamine (0.04 g, 0.33 mmol) were added. The reaction mixture was stirred at room temperature overnight, washed with ammonium chloride solution (2 mL), filtered through a phase separator and organic solvent was removed. The crude was then purified by SCX column and flash chromatography (eluent: gradient from EtOAc to EtOAc:NH3 in MeOH (2M)/10:1) to obtain 0.05 g of the title compound (40%).

1. additionwere added
2. washwashed with ammonium chloride solution (2 mL)
3. filtrationfiltered through a phase separator and organic solvent
4. customwas removed
5. customThe crude was then purified by SCX column and flash chromatography (eluent: gradient from EtOAc to EtOAc:NH3 in MeOH (2M)/10:1)