化学合成,医药中间体。
医药中间体
合成路线 1(1. 合成:150727-06-3)
产率:100%
合成条件:With potassium carbonate In dimethyl sulfoxide at 100 - 105℃;
实验步骤:在装有机械搅拌器,温度计,回流冷凝器,滴液漏斗和加热套的烧瓶中,4,6-二氯-5-(2-甲氧基苯氧基)-2,2'-联嘧啶1(105g),4-(叔丁基)加入苯磺酰胺2(64.1g,0.30mol)的DMSO(525mL)溶液。向该悬浮液中加入碳酸钾(83g,0.60mol)。在搅拌下将所得混合物在100-105℃下加热3-4小时。通过HPLC监测反应进程。将溶液冷却至20-25℃。在10-15分钟内逐滴加入水(875mL)。继续搅拌1小时。滤出沉淀的固体,用水(2×350mL)洗涤,然后转移到岩浆中。加入水(800mL)和浓盐酸(50mL)后,将溶液搅拌30分钟。滤出沉淀的固体,用水(2×200mL)和丙酮(2×175mL)洗涤。将固体在40±2℃下干燥16-24小时的低于大气压。得到的产物为157.8-158.7g(100%),为乳白色固体。
参考文献:
- [1] Organic Process Research and Development, 2011, vol. 15, # 6, p. 1382 - 1387 [2] Patent: WO2014/104904, 2014, A1. Location in patent: Page/Page column 13; 14 [3] Organic Process Research and Development, 2013, vol. 17, # 8, p. 1021 - 1026 [4] Patent: WO2012/73135, 2012, A1. Location in patent: Page/Page column 10 [5] Patent: WO2013/57545, 2013, A1. Location in patent: Paragraph 15 [6] Patent: US2014/275535, 2014, A1. Location in patent: Paragraph 0077; [7] Patent: CN104193687, 2017, B. Location in patent: Paragraph 0135-0137 [8] Patent: WO2010/103362, 2010, A2. Location in patent: Page/Page column 5; 6 [9] Patent: US2012/41200, 2012, A1. Location in patent: Page/Page column 2 [10] Patent: WO2012/56468, 2012, A1. Location in patent: Page/Page column 16 [11] European Journal of Medicinal Chemistry, 2016, vol. 121, p. 658 - 670 [12] Patent: US2008/242687, 2008, A1. Location in patent: Page/Page column 32-33; 34 [13] Patent: WO2009/95933, 2009, A2. Location in patent: Page/Page column 18; 22 [14] Patent: US2010/256371, 2010, A1. Location in patent: Page/Page column 12 [15] Patent: WO2011/24056, 2011, A2. Location in patent: Page/Page column 20 [16] Patent: WO2011/21216, 2011, A2. Location in patent: Page/Page column 19-20 [17] Organic Preparations and Procedures International, 2013, vol. 45, # 6, p. 510 - 514 [18] Organic Preparations and Procedures International, 2016, vol. 48, # 6, p. 481 - 491
合成路线 2(2. 合成:150727-06-3)
产率:97%
合成条件:Stage #1: With potassium carbonate In toluene at 50℃; for 0.50 h; Large scale Stage #2: at 110℃; for 10 h; Large scale
实验步骤:将4-叔丁基苯磺酰胺6(0.85Kg,4.0mol),甲苯(2.8L)和碳酸钾(1.1Kg,8.0mol)的混合物加热至50℃保持30分钟。 向反应混合物中加入5(1.4Kg,4.0mol),然后加热至110℃,保持10小时。 将反应混合物冷却至25℃,加入水(28L),用5N盐酸将pH调节至3以下,搅拌30分钟。 过滤沉淀的固体,用水(4.8L)洗涤并在60℃的烘箱中干燥6小时,得到7(2.05Kg,97%)。 m.p 214-216οC。 1H-NMR(300MHz,CDCl3):δ1.21(9H,s),3.72(3H,s),6.54-6.55(1H,d),6.72-6.76(1H,t),6.86-6.98(2H,m) ,7.23-7.25(2H,d),7.43-7.49(3H,m),8.97-8.98(2H,d); MS:m / z 526.3(M + H); IR(KBr)(υmax,Cm-1):3466.7(-NH伸缩),1592.9(C = O伸缩)。
参考文献:
- [1] Synlett, 2014, vol. 25, # 2, p. 265 - 269