反应详情

Ethyl 4-aminobicyclo[2.2.1]heptane-1-carboxylate (50.0 mg) was dissolved in N,N-dimethylformamide (2 mL) and potassium-carbonate (40.0 mg) was added to the solution. (2S,4S)-1-(2-Bromoacetyl)-4-fluoropyrrolidine-2-carbonitrile (64.2 mg) in N,N-dimethylformamide (1 mL) was then added dropwise at room temperature and the mixture was stirred for 1 hour. The insoluble materials were filtered and the filtrate was concentrated. The resulting residue was purified by silica gel column chromatography (NH silica, eluant: ethyl acetate) to give (2S,4S)-1-[[N-(4-ethoxycarbonylbicyclo[2.2.1]hept-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile (89.0 mg).

1. filtrationThe insoluble materials were filtered
2. concentrationthe filtrate was concentrated
3. customThe resulting residue was purified by silica gel column chromatography (NH silica, eluant: ethyl acetate)