化学合成。
医药; 化工医药
合成路线 1(1. 合成:78888-18-3)
产率:96%
合成条件:at 80℃; for 0.17 h; Green chemistry
实验步骤:一般步骤:反应在50mL RB烧瓶中在减压下在80℃下进行10分钟,除非另有说明。 在典型的实验中,将5mmol胺加入到5mmol BOC酸酐中,并使反应进行10分钟。 在真空条件下在旋转蒸发器中获得所需产物。
参考文献:
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合成路线 2(2. 合成:78888-18-3)
产率:63%
合成条件:Stage #1: With n-butyllithium; copper(l) cyanide In tetrahydrofuran at -78℃; for 0.25 h; Stage #2: With tri-n-butyl-tin hydride In tetrahydrofuran at -78℃; for 0.33 h; Stage #3: at -78℃; for 1 h;
实验步骤:在约78℃下用氰化铜(1.1Sg,12.9mmol)的THF(30mL)溶液用正丁基锂(16.9mL,27.1mmol)缓慢处理,在-78℃下搅拌15分钟,用氢化三丁基锡(7.88g,7.30mL,27.1mmol),历时5分钟,搅拌15分钟,用2-丙炔基氨基甲酸叔丁酯(2.00g,12.9mmol)的四氢呋喃(7mL)溶液处理,在~78℃搅拌保持1小时,并用9:1氯化铵水溶液:氢氧化铵(250mL)和二氯甲烷(200mL)处理。将悬浮液通过短硅藻土垫(Celite)过滤。将滤液的有机相用盐水洗涤并浓缩。将残余物在硅胶上使用1-2%乙酸乙酯/庚烷纯化,得到所需产物(3.66g,63%)。 1H NMR(400MHz,CDCl3)? 6.08(dt,AB系统的B部分,J = 19.3Hz,1.3Hz,1H); 5.93(dt,AB系统的一部分,J = 19.3 Hz,4.8 Hz,1H),4.59(br s,1H),3.78(br s,2H),1.45(s,9H),1.32-1.26,( m,12H),0.90-0.85(m,15H)。
参考文献:
- [1] Chemical Communications, 2015, vol. 51, # 12, p. 2384 - 2387 [2] Patent: US2005/20619, 2005, A1. Location in patent: Page 58-59 [3] Patent: US2005/26944, 2005, A1 [4] Patent: US2005/43347, 2005, A1. Location in patent: Page/Page column 67-68
合成路线 3(3. 合成:78888-18-3)
产率:85.5%
合成条件:With hydrogenchloride In chloroform
实验步骤:1)N-叔丁氧基羰基烯丙基胺(27)的合成将烯丙基胺[2.855g(50mmol)]溶解在氯仿(100μm)中,向其中加入S-(4,6-二甲基嘧啶-2-基)硫代碳酸叔丁酯 [12.017g(50mmol)],然后将混合物在室温下搅拌24小时。 向反应混合物中加入1N盐酸,用氯仿萃取。 将有机层用无水碳酸钾干燥,然后减压浓缩。 通过柱色谱(硅胶:240g;洗脱液:己烷:乙酸乙酯= 3/1)纯化由此获得的粗产物,得到所需产物(27)[6.720g(85.5%,无色棱柱,mp34至34.8)。 C)]。
参考文献:
- [1] Patent: EP278621, 1991, B1 [2] Patent: US4987130, 1991, A