反应详情

To a stirred suspension of 4-(benzylamino)benzoic acid (200 mg, 0.88 mmol) in acetonitrile (2 ml) was added piperidine (0.174 ml, 1.8 mmol), 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (184 mg, 0.97 mmol), hydroxybenzotriazole hydrate (10 mg, catalytic) followed by triethylamine (0.31 ml, 2.2 mmol) and the reaction was stirred at room temperature for 16 hours. The reaction mixture was diluted with water (2 ml) and extracted with dichloromethane (2×2 ml). The organic phases were combined, washed with brine, dried over magnesium sulfate and then concentrated in vacuo. The residue was purified by flash column chromatography (SiO2) eluting with ethyl acetate/dichloromethane (1:4) to afford the title compound as an off white solid (122 mg, 47% yield).

1. extractionextracted with dichloromethane (2×2 ml)
2. washwashed with brine
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated in vacuo
5. customThe residue was purified by flash column chromatography (SiO2)
6. washeluting with ethyl acetate/dichloromethane (1:4)