A process for preparing methylene bis-(dialkylamino-dithioformate) in one step includes: simultaneously feeding all or part of four raw materials: dialkylamine, an aqueous solution of sodium hydroxide, dichloromethane and carbon disulfide through a constant-flow pump into a continuous flow reactor; performing the reactions in the continuous flow reactor under a temperature of 10 to 100° C. and with a residence time of 10 to 100 s; simply separating of the obtained reaction products to give the final product. The process synthesizes the product in one step by using the continuous flow reactor. The rapid mass transfer and heat transfer in the continuous flow reactor promote the main reaction, reduce side reactions, improve the product color, and shorten the operation time. Moreover, the yield is relatively high and the quality of the final product meets the requirements.
一种制备亚甲基双-(二烷基
氨基-二
硫代
甲酸酯)的方法包括:同时将四种原料之一或全部:二烷基胺、
氢氧化钠水溶液、
二氯甲烷和
二硫化碳通过恒流泵输入连续流反应器;在连续流反应器中在10至100°C的温度下进行反应,并在10至100秒的停留时间内进行反应;简单地分离获得的反应产物以得到最终产物。该方法通过使用连续流反应器在一步中合成产品。连续流反应器中的快速质量传递和热传递促进主反应,减少副反应,改善产品颜色,并缩短操作时间。此外,产率相对较高,最终产品的质量符合要求。