化学合成。
化学合成
合成路线 1(1. 合成:94838-59-2)
产率:81%
合成条件:With ammonium formate In ethanol; water at 80℃; for 1 h;
实验步骤:向[2-(4-硝基 - 苯基) - 乙基] - 氨基甲酸叔丁酯(18.7g,70.30mmol)的乙醇(200ml)溶液中加入10%钯炭(2g)的浆液。 加入水(10毫升)。 在80℃下,甲酸铵(44.3g,703mmol)不含水。 缓慢加入三(90毫升)。 加完后,将混合物在80℃下搅拌1小时。 使混合物达到室温,过滤并真空浓缩。 将残余物用水稀释并用二氯甲烷萃取两次。 将合并的有机层用水洗涤,用MgSO 4干燥,过滤,减压蒸发溶剂,得到产物,为黄色油状物(13.5g,81%)。
参考文献:
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合成路线 2(2. 合成:94838-59-2)
产率:98%
合成条件:at 0 - 20℃; for 1 h;
实验步骤:步骤2. 2-(4-氨基苯基)乙基氨基甲酸叔丁酯向搅拌的2-(4-氨基苯基)乙胺(10.0g,73.4mmol)的四氢呋喃(150mL)溶液中加入二碳酸二叔丁酯(16.0) 在0℃下,在四氢呋喃(100mL)中加入73.4mmol)。然后,将混合物在环境温度下搅拌1小时。 蒸发除去挥发性组分,将残余物溶于乙酸乙酯中。 用水洗涤有机相并干燥(MgSO 4)。 浓缩有机溶剂,得到17.0g(98%)标题化合物,为无色粉末。 MS(ESI)m / z 237 [M + H] +,1H-NMR(CDCl3)δ1.43(9H,s),2.68(2H,t,J = 7.0Hz),3.26-3.38(2H,m) ,3.60(2H,br),4.53(1H,br),6.64(2H,d,J = 8.4Hz),6.97(2H,d,J = 8.3Hz)。
参考文献:
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