4-丙炔-1-吗啉是有机合成中间体和医药中间体,可用于实验室研发过程和化工生产过程中。
有机合成; 医药
合成路线 1(1. 合成:5799-76-8)
产率:70%
合成条件:With potassium carbonate In methanol at 0℃; for 4 h; Cooling with ice
实验步骤:将吗啉(100ml,1.148mol)溶解在MeOH(1L)中并在氮气下在冰中冷却,然后在冰中搅拌下加入碳酸钾(120g,0.63mol)和炔丙基溴(124mL,1.148mol)。 继续搅拌而不冷却4小时。 将白色悬浮液通过纸过滤,并将固体用MeOH(100ml)洗涤,小心地蒸发MeOH。 将白色沉淀物悬浮在DCM(400ml)中,通过纸过滤,并小心蒸发。 最后,将油在60℃/ 16毫巴下蒸馏。 得到100g(70%)无色油状物。
参考文献:
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合成路线 2(2. 合成:5799-76-8)
产率:70%
合成条件:With copper(l) chloride In acetonitrile at 80℃; for 72 h;
实验步骤:一般程序:还测试了不同类型的胺,如下表2所示。 除非另有说明,反应条件为:10mol / ml氯化铜(CuCl)催化剂,二氯甲烷(1.5mmol)和CH3CH,反应时间为72小时,反应温度为80℃。
参考文献:
- [1] ChemSusChem, 2012, vol. 5, # 4, p. 625 - 628 [2] Patent: WO2013/6143, 2013, A1. Location in patent: Page/Page column 24
合成路线 3(3. 合成:5799-76-8)
产率:78%
合成条件:With water; copper(l) chloride In dimethyl sulfoxide at 100℃; for 4 h; Inert atmosphere
实验步骤:一般步骤:仲胺(1.0mmol),碳化钙(0.20g,2.5mmol),醛(3mmol),氯化亚铜(0.01g,0.1mmol)和水(0.05mL,3mmol)在DMSO中的混合物( 将3mL)在N 2下在100℃下搅拌4小时。 通过TLC监测反应。 反应完成后,过滤所得混合物以除去固体,用乙酸乙酯(3×10mL)萃取液体并用饱和盐水(3×10mL)洗涤。 将得到的有机相用无水硫酸钠干燥,减压浓缩。 使用石油醚和乙酸乙酯(v / v 10:1)作为洗脱液,通过柱色谱法纯化残余物。
参考文献:
- [1] Journal of Chemical Research, 2017, vol. 41, # 6, p. 341 - 345