化学合成。
有机合成; 生化研究
合成路线 1(1. 合成:25804-49-3)
产率:76%
合成条件:With dmap; dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; for 20.50 h; Inert atmosphere
实验步骤:在N 2气氛下,向4-羟基苯甲酸33(4g,28.96mmol),4-DMAP(176.9mg,1.448mmol)和叔丁醇(100mL)的无水THF(100mL)溶液中加入DCC溶液 在室温下,在无水THF(40mL)中滴加30分钟。 将反应混合物在室温下在N 2气氛下搅拌20小时。 过滤残余物混合物,通过旋转蒸发将滤液还原至~25mL。 将滤液用0.3M Na 2 CO 3溶液洗涤,用无水硫酸钠干燥并真空浓缩。 通过硅胶色谱法(0-30%EtOAc的己烷溶液)纯化浅黄色粗产物,得到34(4.3g,76%),为白色固体。 1H NMR(300MHz,DMSO-d6):δ10.21(s,1H),7.74(d,J = 8.50Hz,2H),6.81(d,J = 8.50Hz,2H),1.50(s,9H); LC-MS(m / z):195 [M + H] +。
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