317810-73-4
317810-73-4 结构式
基本信息
6-(二氟甲氧基)-3-氨基吡啶
6-Difluoromethoxy-pyridin-3-ylamine
3-Pyridinamine, 6-(difluoromethoxy)-
3-Pyridinamine,6-(difluoromethoxy)-(9CI)
制备方法
1192813-41-4
317810-73-4
步骤B:6-(二氟甲氧基)吡啶-3-胺的合成 向脱气的甲醇(100 mL)中加入2-(二氟甲氧基)-5-硝基吡啶(4.7 g,24.7 mmol)和10%钯碳催化剂(500 mg,0.47 mmol)。在常压下进行氢化反应1小时。反应完成后,加入乙酸(2.83 mL,49.4 mmol),随后通过硅藻土过滤反应混合物,并真空浓缩滤液,得到6-(二氟甲氧基)吡啶-3-胺(6.33 g,25.9 mmol,105%收率),产物为橄榄绿色液体。 1H NMR (400 MHz, MeOD-d4) δ ppm: 7.60 (d, J = 2.76 Hz, 1H), 7.37 (s, 0.5H), 7.15 (dd, J = 8.66, 2.89 Hz, 1H), 7.00 (s, 0.5H), 6.71 (d, J = 8.78 Hz, 1H)。
参考文献:
[1] Patent: US2009/270405, 2009, A1. Location in patent: Page/Page column 86
[2] Patent: WO2010/9968, 2010, A1. Location in patent: Page/Page column 44
[3] Patent: WO2011/3684, 2011, A1. Location in patent: Page/Page column 33
[4] Patent: WO2011/53292, 2011, A1. Location in patent: Page/Page column 140
[5] Patent: US2012/108583, 2012, A1. Location in patent: Page/Page column 34
