反应详情

温度

60 °C

A mixture of 3-{4-[(4-(trifluoromethoxy)benzyl)oxy]phenyl}-3H-imidazo[4,5-b]pyridine-6-carboxylic acid (42 mg, 0.1 mmol), CDI (32.4 mg, 0.2 mmol) and DIPEA (87 μL, 0.5 mmol) in dry THF (2 mL) was stirred at 60° C. for 2 h and then treated with 2-(morpholin-4-yl)ethylamine (26 μL, 0.2 mmol). After a further 2 h at 60° C. the mixture was concentrated in vacuo and the residue chromatographed over silica gel eluting with 5% MeOH/CHCl3 to give 3-{4-[(4-(trifluoromethoxy)benzyl)oxy]phenyl}-N-(2-morpholin-4-ylethyl)-3H-imidazo[4,5-b]pyridine-6-carboxamide. 1H NMR (400 MHz, D4-MeOH) δ 2.57 (br.s, 4H), 2.65 (t, J=8 Hz, 2H), 3.60 (t, J=8 Hz, 2H), 3.71 (t, J=8 Hz, 4H), 5.21 (s, 2H), 7.22 (dd, J=6.8 and 2 Hz, 2H), 7.30 (d, J=8.4 Hz, 2H), 7.59 (d, J=8.8 Hz, 2H), 7.71 (dd, J=6.8 and 2 Hz, 2H), 8.57 (d, J=1.6 Hz, 1H), 8.71 (s, 1H) and 8.90 (d, J=1.6 Hz, 1H); MS (ES+): m/z 542 [MH+].

1. concentrationAfter a further 2 h at 60° C. the mixture was concentrated in vacuo
2. customthe residue chromatographed over silica gel eluting with 5% MeOH/CHCl3