申请人:Asymchem Laboratories (Tianjin) Co., Ltd.
公开号:EP3995477A1
公开(公告)日:2022-05-11
The present disclosure discloses a method and a device for continuously synthesizing cyclopropane compounds. The method includes the following steps: continuously performing a synthetic reaction of a diazomethane precursor in a first reactor, the reaction product of the first reactor flowing into a separator for stratification, the organic phase obtained by stratification overflowing into a second reactor, continuously consuming the diazomethane precursor in a second reactor to prepare diazomethane and performing an electron-rich monoolefin cyclopropanation reaction in situ so as to obtain the cyclopropane compound. The technical solution of the present disclosure may be applied to achieve automatic control, decrease the transfer of high-risk materials, and prevent the risk of pipeline transfer of diazomethane solution, and effectively improve production safety. Moreover, the present disclosure provides a simple device to save equipment investment, and may safely and quantitatively achieve the production of diazomethane and the cyclopropanation reaction of olefins simultaneously.
本发明公开了一种连续合成环丙烷化合物的方法和装置。该方法包括以下步骤:在第一反应器中连续进行重氮甲烷前驱体的合成反应,第一反应器的反应产物流入分离器中进行分层,分层得到的有机相溢流到第二反应器中,在第二反应器中连续消耗重氮甲烷前驱体制备重氮甲烷,并就地进行富电子单烯烃环丙烷化反应,从而得到环丙烷化合物。应用本公开的技术方案,可实现自动控制,减少高危物料的转移,防止重氮甲烷溶液的管道转移风险,有效提高生产安全性。此外,本发明提供的装置简单,节省设备投资,可安全、定量地同时实现重氮甲烷的生产和烯烃的环丙烷化反应。