反应详情

温度

25 °C

N-[3-(Trifluoromethyl)benzoyl]glycine (4.22 g, 17.0 mmol), EDCI (4.25 g, 22.1 mmol), 1-hydroxybenzotriazole hydrate (2.99 g, 22.1 mmol) and triethylamine (1.72 g) were added to an anhydrous dichloromethane (200 mL) solution of 1-(tert-butoxycarbonyl)-4-(aminomethyl)piperidine (4.03 g). The resulting reaction mixture was stirred at 25° C. for 20 hours, and H2O (100 mL) was then added to the mixture. The obtained mixture was extracted with dichloromethane (50 mLX 2). The extracts were combined, washed with H2O (50 mL×2) and brine (50 mL), dried (over MgSO4) and concentrated to thereby afford a yellow oil. The obtained crude product was purified by column chromatography (SiO2,70% ethyl acetate-hexane) to provide 1-(tert-butoxycarbonyl)-4-[[N-(3-(trifluoromethyl)benzoyl)glycyl]aminomethyl]piperidine as a white solid (6.39 g, 85%). 1H NMR (CDCl3, 300 MHz) δ 1.4 (s, 9H), 1.0-1.8 (m, 5H), 2.6-2.8 (m, 2H), 3.15-3.3 (m, 2H), 4.0-4.3 (m, 4H), 6.6-6.7 (m, 1H), 7.64 (s, 1H), 7.60 (dd, 1H, J=7.2, 7.2 Hz), 7.79 (d, 1H, J=7.2 Hz), 8.0 (d, 1H, J=7.2 Hz), 8.11 (s, 1H). The purity was determined by RPLC/MS (97%). ESI/MS m/e 444.3 (M++H, C21H28N3O4).

1. customThe resulting reaction mixture
2. extractionThe obtained mixture was extracted with dichloromethane (50 mLX 2)
3. washwashed with H2O (50 mL×2) and brine (50 mL)
4. dry with materialdried (over MgSO4)
5. concentrationconcentrated
6. customto thereby afford a yellow oil
7. customThe obtained crude product
8. customwas purified by column chromatography (SiO2,70% ethyl acetate-hexane)