化学合成。
化学合成; 有机中间体
合成路线 1(1. 合成:405224-24-0)
产率:100%
合成条件:With hydrazine In ethanol at 170℃; for 0.17 h; Microwave irradiation
实验步骤:例3; 5-溴-1H-吡唑并[3,4-b]吡啶-3-胺(4); 将化合物3(307mg,1.4mmol)溶于微波管中的EtOH(10mL)中,向其中加入5当量的NH 2 NH 2,并将反应混合物在170℃下微波照射10分钟。 蒸发溶剂,得到定量收率的标题化合物4。
参考文献:
- [1] Patent: WO2007/59219, 2007, A1. Location in patent: Page/Page column 54-55 [2] Patent: WO2016/26549, 2016, A1. Location in patent: Page/Page column 43 [3] Bioorganic and Medicinal Chemistry Letters, 2013, vol. 23, # 20, p. 5578 - 5585 [4] Bioorganic and Medicinal Chemistry Letters, 2003, vol. 13, # 9, p. 1577 - 1580 [5] Patent: WO2013/42035, 2013, A1. Location in patent: Page/Page column 17 [6] Patent: US2014/249170, 2014, A1. Location in patent: Paragraph 0067; 0070 [7] Patent: WO2008/36272, 2008, A1. Location in patent: Page/Page column 45 [8] Patent: US2004/19052, 2004, A1. Location in patent: Page/Page column 17 [9] Bioorganic and Medicinal Chemistry Letters, 2010, vol. 20, # 14, p. 4273 - 4278 [10] Patent: WO2017/44828, 2017, A1. Location in patent: Paragraph 0395
合成路线 2(2. 合成:405224-24-0)
产率:80%
合成条件:for 6 h; Reflux
实验步骤:将在上述步骤2中得到的5-溴-2-甲氧基 - 烟腈(4g,18.8mmol)溶解在肼(40mL)中并回流6小时。将反应混合物冷却至室温,得到的固体 分离,用水洗涤,干燥,得到5-溴-1H-吡唑并[3,4-b]吡啶-3-胺(3.2g,80%)。
参考文献:
- [1] Patent: KR2017/46848, 2017, A. Location in patent: Paragraph 0231; 0232; 0241; 0242 [2] Patent: WO2012/101239, 2012, A1. Location in patent: Page/Page column 56 [3] Patent: US2013/85144, 2013, A1. Location in patent: Paragraph 0284; 0285; 0286 [4] Patent: EP2689778, 2014, A1. Location in patent: Paragraph 0186 [5] Patent: WO2014/16433, 2014, A1. Location in patent: Page/Page column 54; 55 [6] Patent: WO2014/16434, 2014, A1. Location in patent: Page/Page column 54 [7] Patent: EP2689779, 2014, A1. Location in patent: Paragraph 0189-0191