反应详情

N-(cis-4-Aminocyclohexyl)-2-chloro-5-fluoronicotinamide (837 mg, 2.72 mmol) and triethylamine (1.14 ml, 8.15 mmol) were dissolved in dimethylformamide (20 ml) and 2-methoxy acetic acid (208 μl, 2.72 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (573 mg, 2.99 mmol) and 1-hydroxybenzotriazole (404 mg, 2.99 mmol) were added. The reaction was stirred under nitrogen at room temperature for 18 h then partitioned between water and ethyl acetate. The organic phase was dried over MgSO4 and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel eluting using dichloromethane:methanol (96:4 to 91:9) as eluant to give 2-chloro-5-fluoro-N-{cis-4-[(methoxyacetyl)amino]cyclohexyl}nicotinamide (550 mg).

1. customthen partitioned between water and ethyl acetate
2. dry with materialThe organic phase was dried over MgSO4
3. customthe solvent was removed under reduced pressure
4. customThe residue was purified by flash column chromatography on silica gel eluting