反应详情

To a stirred solution of (4-phenylamino-benzoylamino)-acetic acid (0.083 g, 0.00031 mol) in DMF (5 mL) was added DIPEA (0.099 g, 0.00077 mol), HOBt (0.041 g, 0.000307 mol) and EDCI.HCl (0.073 g, 0.00038 mol) at ambient temperature. After 2 minutes (2-chloro-phenyl)-piperidin-4-yl-amine dihydrochloride (0.063 g, 0.00026 mol) was added and the resulting mixture was stirred overnight. The reaction mixture was then diluted with cold water and the product was extracted with ethyl acetate. The ethyl acetate layer was washed with brine solution, dried over sodium sulfate and concentrated. The residue was purified by column chromatography using silica gel 60-120 mesh (60% ethyl acetate in hexane) to afford 0.04 g (33%) of N-{2-[4-(2-chloro-phenylamino)-piperidin-1-yl]-2-oxo-ethyl}-4-phenylamino-benzamide. LCMS: 463.17 (M+1)+, 95.82%, 1H NMR (DMSO-d6): δ 8.6 (s, 1H), 8.2 (t, 1H), 7.8 (d, 2H), 7.5 (q, 3H), 7.2 (t, 3H), 7.1 (d, 2H), 6.9 (q, 2H), 6.6 (t, 1H), 4.9 (d, 1H), 4.3 (d, 1H), 4.1 (d, 2H), 3.9 (d, 1H), 3.6 (m, 1H), 3.2 (m, 1H), 2.8 (m, 2H), 2.0 (t, 3H).

1. extractionthe product was extracted with ethyl acetate
2. washThe ethyl acetate layer was washed with brine solution
3. dry with materialdried over sodium sulfate
4. concentrationconcentrated
5. customThe residue was purified by column chromatography