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一种联苯苄唑EP杂质B的制备方法
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10Claims · 1 independent
§ Ⅰ
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Inventor
梁大成; 梁绮明; 冯杏茹
IPC Classification
C07D 233/58 (2006.01)
本发明公开了一种联苯苄唑EP杂质B的制备方法,步骤包括:(1)以式II所示结构化合物、式III所示结构化合物为起始原料经过亲核加成得到中间产物式IV所示结构化合物,(2)式IV所示结构化合物经还原氢化合成式I所示结构化合物,得到联苯苄唑EP杂质B。优点包括:原料廉价易得,反应步骤少且制备周期短,路线总收率高,同时副产物少、环境友好无污染物产生;制得的杂质纯度高,完全满足杂质对照品的质量要求。
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