化学合成。
化学合成
合成路线 1（1. 合成：62224-19-5）
产率：100%
合成条件：for 3 h;
实验步骤：称取950毫克（4.62毫摩尔）5-溴-2-羧基噻吩的10毫升MeOH溶液，缓慢加入2毫升SOCl2。反应完成后，将混合物冷却至室温，减压蒸发，并用 将一定量的甲苯溶解干燥，重复3次，得到中间体5-溴噻吩-2-羧酸酯1.0g，收率100％。
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