反应详情

温度

60 °C

To a solution of 4-[bis-(3-methyl-pyridin-2-ylmethyl)-amino]-piperidine-1-carbonitrile (0.2413 g, 0.72 mmol) in DMF (7 mL) was added NH2OH.HCl (0.1127 g, 1.44 mmol) and DIPEA (0.25 mL, 1.44 mmol), and stirred at 60° C. for 16 hours. Saturated NaHCO3 (15 mL) was added and extracted with CH2Cl2 (3×50 mL). The combined organic extracts were washed with brine (2×50 mL), dried (Na2SO4), filtered, and concentrated. Purification of the crude material by column chromatography on silica gel (20:1:1 CH2Cl2-MeOH—NH4OH) provided 66.1 mg (58%) of COMPOUND 286 as a yellow solid. 1H NMR (CD3OD) 1.70-1.87 (m, 4H), 2.15 (s, 6H), 2.36-2.58 (m, 3H), 3.71 (d, 2H), 3.82 (s, 4H), 7.19-7.24 (m, 2H), 7.53 (d, 2H, J=7.5 Hz), 8.25 (d, 2H, J=4.8 Hz). 13C NMR (CD3OD) δ 18.70, 28.15, 48.19, 55.78, 59.90, 124.62, 136.04, 140.60, 146.72, 158.48, 160.89. ES-MS m/z 369.3 (M+H). Anal. Calcd. for C20H28N6O.0.9H2O: C, 62.44; H, 7.81; N, 21.85. Found: C, 62.60; H, 7.82; N, 21.74.

1. extractionextracted with CH2Cl2 (3×50 mL)
2. washThe combined organic extracts were washed with brine (2×50 mL)
3. dry with materialdried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated
6. customPurification of the crude material by column chromatography on silica gel (20:1:1 CH2Cl2-MeOH—NH4OH)