申请人:Chang Sha Jia Qiao Biotech CO., LTD.
公开号:US10981861B1
公开(公告)日:2021-04-20
The present disclosure provides a bromination method for m-diamide compounds comprising reacting a compound represented by formula I with a brominating reagent in the presence of an oxidant to obtain a brominated product represented by formula II. The method adopts a special design of brominating reagents and reaction conditions to introduce a bromine atom at a specific site of the m-diamide compound, with 87.9 to 99.5% yield of a brominated product obtained by the reaction and higher than 91.8% purity. Therefore, the bromination method has a simple route, mild reaction conditions, high efficiency, and does not require complicated and cumbersome post-treatment processes; furthermore, raw materials used for the bromination reaction are readily available, costs of the brominating reagent are low, and the brominated product finally obtained has high yield and high purity, thus the method is a novel one with a broad application prospect.
本公开提供了一种对m-二酰胺化合物进行溴化的方法,包括在氧化剂存在下,将式I代表的化合物与溴化试剂反应,得到式II代表的溴化产物。该方法采用特殊设计的溴化试剂和反应条件,在m-二酰胺化合物的特定位置引入溴原子,反应后可获得87.9%至99.5%的溴化产物收率和高于91.8%的纯度。因此,该溴化方法具有简单的路线、温和的反应条件、高效率,并且不需要复杂和繁琐的后处理过程;此外,用于溴化反应的原材料易得,溴化试剂的成本低,最终获得的溴化产物收率和纯度高,因此该方法是一种具有广泛应用前景的新方法。