Process for preparation of methylallyl chloride from 1,2-dichlorotertbutane
KOU Ran1, JIN Yi-feng2,3, YIN Hong4, WANG Sheng-li1, DONG Nan5
1. Zhejiang Lvkean Chemical Co., Ltd., Shaoxing 312369, China; 2. Zhejiang Huangma Technology Co., Ltd., Shaoxing 312363, China; 3. Shaoxing Key Laboratory of New Materials for Special Surfactants, Shaoxing 312369, China; 4. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310014, China; 5. Zhejiang Huangma Shangyi New Material Co., Ltd., Shaoxing 312369, China
Abstract: Isobutene chlorination is the main method to prepare important organic intermediate methylallyl chloride.Total yield of this method can be further improved by effectively using the by-product 1,2-dichlorotert butane.A combined distillation column is designed to explore the reactive rectification process,and investigate the effects of the concentration of sodium hydroxide,the ratio of sodium hydroxide to 1,2-dichlorotertbutane,the feed rate,the feed temperature and the reflux ratio on the elimination reaction of 1,2-dichlorotertbutane for the preparation of methylallyl chloride.A group of better preparation conditions are obtained,under which the yield of methylallyl chloride exceeds 99.0%.
寇然, 金一丰, 尹红, 王胜利, 董楠. 1,2-二氯叔丁烷制备甲基烯丙基氯的工艺研究[J]. 现代化工, 2022, 42(12): 255-258.
KOU Ran, JIN Yi-feng, YIN Hong, WANG Sheng-li, DONG Nan. Process for preparation of methylallyl chloride from 1,2-dichlorotertbutane. Modern Chemical Industry, 2022, 42(12): 255-258.