申请人:BUKWANG PHARMACEUTICAL CO., LTD.
公开号:US11254645B2
公开(公告)日:2022-02-22
The present disclosure relates to a method for preparing tolimidone on large scale with maintaining high purity and uniform particle size distribution, and more specifically, a method suitable for preparing tolimidone on industrially large scale by using tetrabutyl ammonium bromide catalyst and recrystallization in ethanol, which can prepare highly pure tolimidone in a time shorter than prior arts while maintaining water content and particle size distribution constantly.
本公开涉及一种保持高纯度和均匀粒度分布的大规模制备托里米酮的方法,更具体地说,是一种适用于工业化大规模制备托里米酮的方法,该方法采用四丁基溴化铵催化剂,在乙醇中重结晶,与现有技术相比,可以在保持含水量和粒度分布不变的情况下,在更短的时间内制备出高纯度的托里米酮。