化学合成。
化学合成
合成路线 1(1. 合成:402-17-5)
产率:26.1%
合成条件:at 20 - 40℃; for 1 h;
实验步骤:通用方法:将适当的苯酚(3)(150mmol)溶解在冰醋酸(50mL)中,搅拌溶液并保持在40℃。 然后,在15分钟内滴加含有11mL 65%HNO 3和30mL冰醋酸的溶液。 将混合物在室温下搅拌。 45分钟后倒入冰水(400毫升)中。 将含水混合物用CHCl 3(100mL)萃取四次。 接下来,收集有机相,用Na 2 SO 4干燥,蒸发并通过柱色谱(4a,4c,4e)纯化或从乙醇(4b)中结晶。 化合物4d无需进一步纯化即可用于下一步骤[17]。
参考文献:
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