化学合成。
化学合成
合成路线 1（1. 合成：6091-64-1）
产率：86%
合成条件：for 24 h; Reflux
实验步骤：将2-溴 - 苯甲酸（5g，24.87mmol）溶于乙醇（100mL）中。向其中加入硫酸（5mL）并在回流下搅拌24小时。 在反应终止后，将反应冷却至室温。 减压浓缩反应物以除去溶剂，然后用水洗涤并用乙酸乙酯萃取。 将有机层用无水硫酸镁干燥，过滤并浓缩。 通过柱色谱法纯化所得残余物，得到标题化合物（4.9g，86％）。
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