反应详情

A mixture of 2-(3-nitrophenyl)thiazolo[4,5-c]pyridine (1.53 g, 5.9 mmol), NH4Cl (2.76 g, 51.6 mmol), iron powder (1.80 g, 32.2 mmol), H2O (30 mL) and methanol (120 mL) was heated to reflux for 5.5 h under N2. The mixture was filtered and the filtrate was diluted with H2O (400 mL). The precipitate was collected by filtration and dried in vacuo to afford 3-(thiazolo[4,5-c]pyridin-2-yl)benzenamine as a brown solid (841 mg, 63%). 1HNMR (400 MHz, DMSO-d6) δ: 9.28 (1H, s); 8.52 (1H, s); 8.21(1H, s); 7.23-7.38 (3H, d), 6.79 (1H, s), 5.51 (2H, s); MS (ESI) calcd. for C12H9N3S (m/z): 227, found: 228 [M+H]P

1. temperaturewas heated
2. temperatureto reflux for 5.5 h under N2
3. filtrationThe mixture was filtered
4. additionthe filtrate was diluted with H2O (400 mL)
5. filtrationThe precipitate was collected by filtration
6. customdried in vacuo