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-4-(4-ethylpiperazin-1-yl)-3-nitropyridin-2-amine (100 mg, 0.30 mmol), DMF (1.5 mL), 1M Na2S2O4 (3 eq, 0.90 mmol, 0.90 mL) and 4-(N,N-dimethylamino)benzaldehyde (1.05 eq, 0.32 mmol, 47 mg). After 18 h, filtration of the precipitate gave pure product (47 mg, 49%) as an off-white solid; 1H-NMR (500 MHz, DMSO-d6) 1.22 (br s, 3H, CH2CH3), 2.55 (s, 2H, CH2CH3), 2.73 (s, 2H, piperazine NCH2), 2.89 (s, 2H, piperazine NCH2), 3.01 (s, 6H, N(CH3)2), 3.80 (br s, 4H, piperazine N(CH2)2), 6.83 (d, J=8.9 Hz, 2H, N,N-dimethylaminophenyl), 8.02 (d, J=8.9 Hz, 2H, N,N-dimethylaminophenyl), 8.20 (s, 1H, imidazo[4,5-b]pyridine H-5), 13.23 (br s, 1H, imidazo[4,5-b]pyridine NH);

1. customThis was prepared
2. filtrationfiltration of the precipitate