申请人:ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD
公开号:US20220024860A1
公开(公告)日:2022-01-27
The present application relates to a method for citalopram intermediate citalopram diol. The method comprises: first mixing two Grignard reagents required for a reaction; then mixing the mixed Grignard reagents with a raw material 5-cyanophthalide in a temperature-controllable micromixer to obtain a reaction solution; then subjecting the reaction solution to the reaction by means of a reactor to obtain a citalopram diol reaction solution; and then performing operations such as quenching, concentration, extraction, acidification, and crystallization to obtain a qualified product. The citalopram diol provided in the present invention has good selectivity, high yield, high safety, safety and reliability, and little sewage discharge, and is suitable for industrial production.
本申请涉及一种制备西酞普兰中间体西酞普兰二醇的方法。该方法包括:首先混合所需反应的两种格氏试剂;然后将混合后的格氏试剂与原料5-氰基邻苯二甲酸酐在可控温度的微型混合器中混合,以获得反应溶液;然后通过反应器对反应溶液进行反应,以获得西酞普兰二醇反应溶液;最后进行熄灭、浓缩、萃取、酸化和结晶等操作,以获得合格的产品。本发明提供的西酞普兰二醇具有良好的选择性、高产率、高安全性、可靠性以及少量的污水排放,适用于工业生产。