作为医药中间体,用于相关药物合成。
医药
合成路线 1(1. 合成:2077-19-2)
产率:91%
合成条件:Stage #1: at -50 - 20℃; Stage #2: With ammonium chloride In tetrahydrofuran; diethyl ether
实验步骤:将1-(4-溴苯基)乙酮(9.25g,46.5mmol)溶解在四氢呋喃(200mL)中。 将溶液在-50℃浴中冷却。 在15分钟内加入甲基溴化镁(3M在乙醚中,46.5mL,139mmol)。 使反应温热至室温,然后搅拌20小时。 用饱和氯化铵淬灭反应,然后用乙酸乙酯萃取。 将有机层用硫酸镁干燥,过滤并浓缩,得到油状物。 将该油状物在硅胶柱上纯化(0-20%乙酸乙酯的己烷溶液),得到产物无色油状物(9.1g,46.2mmol,91%收率)。 MS(ESI)m / z 197.1 [M] +,199.1 [M + 2] +。
参考文献:
- [1] Journal of Medicinal Chemistry, 1995, vol. 38, # 17, p. 3368 - 3383 [2] Patent: WO2010/62571, 2010, A1. Location in patent: Page/Page column 92 [3] Journal of the Chemical Society - Perkin Transactions 1, 1997, # 15, p. 2169 - 2174 [4] Journal of the American Chemical Society, 1971, vol. 93, p. 6877 - 6887 [5] Journal of the American Chemical Society, 1999, vol. 121, # 14, p. 3557 - 3558 [6] Patent: WO2005/61491, 2005, A2. Location in patent: Page/Page column 54-55 [7] Patent: WO2015/42397, 2015, A1. Location in patent: Paragraph 0001243 [8] Journal of Medicinal Chemistry, 2015, vol. 58, # 13, p. 5323 - 5333 [9] Patent: WO2006/133559, 2006, A1. Location in patent: Page/Page column 42
合成路线 2(2. 合成:2077-19-2)
产率:95%
合成条件:Stage #1: With n-butyllithium In tetrahydrofuran; hexane at -78℃; Stage #2: at -78 - 0℃; Stage #3: With water; ammonium chloride In tetrahydrofuran; hexane at 0℃;
实验步骤:中间体2-(4-溴苯基)丙-2-醇(1AK-1)的制备; 将二溴苯(2g,8.478mmol)的四氢呋喃(25mL)溶液冷却至-78℃,滴加正丁基锂(2.5 / W的己烷溶液; 3.8mL,9.33mmol)并搅拌1小时。 逐滴加入丙酮(591mg,10.2mmol),一旦加完,将反应升温至0℃并搅拌3小时。 加入饱和氯化铵和水,用75%乙酸乙酯的庚烷溶液萃取。 有机相用盐水洗涤,硫酸镁干燥,过滤并浓缩,得到(1AK-1)(1.74g,95%),为无色油状物.1 H NMR(500MHz,氯仿-d)d ppm 1.58(s,6 H )1.79 - 1.82(m,1 H)7.38(d,2 H)7.47(d,2 H)
参考文献:
- [1] Patent: WO2010/86820, 2010, A1. Location in patent: Page/Page column 56 [2] Patent: US2016/31892, 2016, A1. Location in patent: Paragraph 0164-0166 [3] Patent: WO2016/77378, 2016, A1. Location in patent: Page/Page column 126; 127 [4] Patent: WO2016/77380, 2016, A1. Location in patent: Page/Page column 86; 87 [5] Journal of the American Chemical Society, 1980, vol. 102, p. 2869 [6] Bioorganic and medicinal chemistry letters, 2002, vol. 12, # 11, p. 1457 - 1461 [7] Patent: EP2196465, 2010, A1. Location in patent: Page/Page column 38
合成路线 3(3. 合成:2077-19-2)
产率:90%
合成条件:at 0 - 20℃; for 5 h;
实验步骤:在0℃下,向4-溴苯甲酸甲酯(5g,23.25mmol)的THF(50mL)溶液中逐滴加入甲基溴化镁(23.25mL,69.8mmol)(3M在乙醚中)。 将得到的混合物在室温下搅拌5小时。 加入柠檬酸水溶液(1M),将混合物搅拌1小时,然后用乙酸乙酯萃取。 将有机层用硫酸钠干燥,浓缩,并通过快速柱色谱法(80g硅胶,20%-50%EtOAc /己烷)纯化,得到步骤1的产物(4.5g,90%收率),为无色油状物。 LC保留时间:2.63 mm。
参考文献:
- [1] Patent: WO2015/27021, 2015, A1. Location in patent: Page/Page column 67; 68; 81; 82 [2] Patent: WO2005/90300, 2005, A1. Location in patent: Page/Page column 35 [3] Patent: US2006/25421, 2006, A1. Location in patent: Page/Page column 14 [4] Patent: WO2006/48727, 2006, A1. Location in patent: Page/Page column 81-82 [5] Patent: WO2006/106416, 2006, A1. Location in patent: Page/Page column 34-35 [6] Bioorganic and Medicinal Chemistry Letters, 2010, vol. 20, # 3, p. 887 - 892 [7] Journal of Medicinal Chemistry, 2008, vol. 51, # 24, p. 7953 - 7967