反应详情

A solution of 2-(2-oxo-3,3-diphenylpiperidin-1-yl)acetic acid (Example 68E, 0.063 g, 0.204 mmol), N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (0.059 g, 0.305 mmol) and 6-fluorochroman-4-amine (0.037 g, 0.224 mmol) in dichloromethane (0.5 mL) was stirred at room temperature. After stirring for approximately 60 hours, the reaction was loaded directly onto a SF15-12 column (Analogix®, Burlington, Wis.), and the title compound was eluted using a gradient of 5% to 75% ethyl acetate/hexanes over 25 minutes (flow=30 mL/minute). 1H NMR (300 MHz, CDCl3) δ ppm 7.22-7.31 (m, 2H), 7.15-7.22 (m, 5H), 7.05-7.10 (m, 2H), 6.85-6.94 (m, 3H), 6.75-6.81 (m, 1H), 5.13 (dt, J=8.5, 5.8 Hz, 2H), 4.18 (d, J=14.6 Hz, 1H), 4.10-4.21 (m, 1H), 3.97-4.09 (m, 1H), 4.01 (d, J=14.6 Hz, 1H), 3.54-3.62 (m, 2H), 2.54-2.64 (m, 2H), 2.12-2.25 (m, 1H), 1.91-2.02 (m, 1H), 1.81-1.90 (m, 2H); MS (ESI−) m/z 457 (M−H)−.

1. washthe title compound was eluted
2. customover 25 minutes