反应详情

7-Benzyl-2,7-diazaspiro[3.5]nonane dihydrochloride from Example 7F (0.237 g, 0.749 mmol), the product from Example 14D (0.248 g, 0.749 mmol), N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine (0.199 ml, 1.123 mmol) and N-methylmorpholine (0.247 ml, 2.247 mmol) were stirred together in dichloromethane (2 mL). After stirring overnight, the reaction mixture was diluted with dichloromethane (20 mL) and washed with 1 N HCl (10 mL), brine (10 mL), dried over magnesium sulfate and concentrated. The residue was loaded onto a GraceResolv 40 gm silica gel column and the product was eluted with a gradient of 0.4% methanol/dichloromethane containing 0.2 N NH3 to 6% methanol/dichloromethane containing 0.2 N NH3 to yield the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 7.39-7.15 (m, 9H), 6.99 (t, J=8.2, 4H), 3.97 (s, 2H), 3.72 (d, J=20.0, 4H), 3.53 (t, J=6.5, 2H), 3.46 (s, 2H), 2.75 (t, J=6.4, 2H), 2.32 (s, 4H), 1.73 (s, 4H); MS (ESI+) m/z 530.2 (M+H)+.

1. washwashed with 1 N HCl (10 mL), brine (10 mL)
2. dry with materialdried over magnesium sulfate
3. concentrationconcentrated
4. washthe product was eluted with a gradient of 0.4% methanol/dichloromethane containing 0.2 N NH3 to 6% methanol/dichloromethane containing 0.2 N NH3