化学合成。
化学合成
合成路线 1(1. 合成:887707-23-5)
产率:81%
合成条件:With N-iodo-succinimide In N,N-dimethyl-formamide; acetonitrile at 80℃; for 2 h;
实验步骤:5-碘-3-三氟甲基-2-吡啶醇C 800C,2h I> 80%将3-三氟甲基-2-吡啶醇(25g,153.3mmol)溶于无水CH 3 CN(150mL)和DMF(150mL)中。 然后加入N-碘代琥珀酰亚胺(34.5g,153mmol)。 将反应混合物在80℃下搅拌2小时并冷却至室温。 然后将1M NaHCO 3水溶液(150mL)加入冷却的混合物中。 搅拌5分钟后,将溶剂蒸发至干。 加入水,水相用二氯甲烷萃取(x2)。 然后蒸发有机相,将所需产物在水中重结晶,得到36.2g(81%)白色粉末。 1 H NMR(500MHz,CDCl 3)δ7.85(d,J = 2.3,1H); 7.98(d,J = 2.3,IH),13.41(br s,IH); 13 C NMR(250MHz CDCl 3)δ63.0,121.4(q,JC-F = 272.3Hz),122.2(q,JC-F = 31.6Hz),144.4,148.1q,(JC-F = 5.0Hz),160.1。
参考文献:
- [1] Organic Process Research and Development, 2013, vol. 17, # 12, p. 1561 - 1567 [2] Patent: WO2008/119015, 2008, A2. Location in patent: Page/Page column 48 [3] Patent: JP2016/11315, 2016, A. Location in patent: Paragraph 0084 [4] Patent: US9388159, 2016, B2. Location in patent: Page/Page column 19; 20; 21 [5] Patent: WO2015/100613, 2015, A1. Location in patent: Page/Page column 17 [6] Patent: WO2015/100617, 2015, A1. Location in patent: Page/Page column 36 [7] Synthetic Communications, 2006, vol. 36, # 9, p. 1235 - 1245 [8] Patent: WO2009/18656, 2009, A1. Location in patent: Page/Page column 53 [9] Patent: WO2009/18657, 2009, A1. Location in patent: Page/Page column 63 [10] Patent: WO2009/76747, 2009, A1. Location in patent: Page/Page column 62 [11] Patent: WO2015/196144, A2. Location in patent: Paragraph 0326 [11] Patent: , 2015, . Location in patent: Paragraph 0326 [13] Patent: US2008/45516, 2008, A1. Location in patent: Page/Page column 30