反应详情

This was prepared using the same procedure as for 4-(6-bromo-2-(4-(dimethylamino)phenyl)-3H-imidazo[4,5-b]pyridin-7-yl)-N-phenylpiperazine-1-carboxamide, but here using 5-bromo-3-nitro-4-(4-phenylpiperazin-1-yl)pyridin-2-amine (75 mg, 0.20 mmol), DMF (1.5 mL), 1M Na2S2O4 (3 eq, 0.60 mmol, 0.60 mL) and 4-(N,N-dimethylamino)benzaldehyde (1.05 eq, 0.21 mmol, 31 mg). After 18 h, filtration of the precipitate and trituration with Et2O gave the product (34 mg, 36%) as a pale yellow solid; 1H-NMR (500 MHz, DMSO-d6) 3.00 (s, 6H, N(CH3)2), 3.36-3.38 (m, 4H, piperazine N(CH2)2), 3.78-3.80 (m, 4H, piperazine N(CH2)2), 6.80-6.83 (m, 1H, phenyl H-4), 6.82 (d, J=8.7 Hz, 2H, N,N-dimethylaminophenyl), 7.03 (d, J=8.0 Hz, 2H, phenyl H-2 & H-6), 7.25 (t, br, J=8.0 Hz, 2H, phenyl H-3 & H-5), 8.02 (d, J=8.8 Hz, 2H, N,N-dimethylaminophenyl), 8.19 (s, 1H, imidazo[4,5-b]pyridine H-5), 13.14 (s, br, 1H, imidazo[4,5-b]pyridine NH);

1. customThis was prepared
2. filtrationfiltration of the precipitate and trituration with Et2O