Diisopropylethylamine → tert-butyl 1-[4-[2-(difluoromethyl)-4-methoxy-1H-benzimidazol-1-yl]-6-(4-morpholinyl)-1,3,5-triazin-2-yl]-4-piperidinylcarbamate

Participants

Reaction Steps

A mixture of 1-[4-chloro-6-(4-morpholinyl)-1,3,5-triazin-2-yl]-2-(difluoromethyl)-4-methoxy-1H-benzimidazole (0.992 g, 2.5 mmol), tert-butyl 4-piperidinylcarbamate (1.00 g, 5 mmol), and DIPEA (0.65 g, 5 mmol) in THF (100 mL) was stirred at room temperature for 30 min. The solution was then concentrated and diluted with water (100 mL) containing 1 mL of acetic acid. The resulting solid was collected, washed with water, and dried to give 1.38 g (98%) of tert-butyl 1-[4-[2-(difluoromethyl)-4-methoxy-1H-benzimidazol-1-yl]-6-(4-morpholinyl)-1,3,5-triazin-2-yl]-4-piperidinylcarbamate: mp (MeOH) 208-209° C.; 1H NMR (CDCl3) δ 7.88 (d, J=8.1 Hz, 1H), 7.48 (t, JHF=53.6 Hz, 1H), 7.34 (t, J=8.2 Hz, 1H), 6.81 (d, J=7.9 Hz, 1H), 4.66 (br d, J=13.4 Hz, 2H), 4.46 (m, exchangeable with D2O, 1H), 4.04 (s, 3H), 3.87 (m, 4H), 3.78 (m, 5H), 3.12 (m, 2H), 2.07 (br d, J=14.0 Hz, 2H), 1.46 (s, 9H), 1.45-1.33 (m, 2H); Anal. Calcd. for C26H34F2N8O4: C, 55.7; H, 6.1; N, 20.0. Found: C, 55.85; H, 6.1; N, 20.1%.

Provenance & Evidence