全氟丁二烯的合成条件研究及机理探讨  

Study on Synthesis Conditions and Mechanism of Perfluorobutadiene

作　　者：朱璟 王佳剑[1,2] 汪宝和 ZHU Jing;WANG Jia-jian;WANG Bao-he(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China;Key Laboratory for Green Chemical Technology of Ministry of Education,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津大学化工学院,天津300350 [2]天津大学绿色合成与转化教育部重点实验室,天津300350

出　　处：《当代化工》2021年第3期618-622,共5页Contemporary Chemical Industry

摘　　要：在原来全氟丁二烯的合成研究基础上,从工业化制备的角度出发,优化以1,4-二碘全氟丁烷为原料制备全氟丁二烯的工艺,得到适宜的反应条件:由溴苯在乙醚溶剂中制备的格氏试剂与1,4-二碘全氟丁烷在四氢呋喃溶剂中,加料速度为20mL·min^(-1)、真空度为6.7k Pa的条件下进行反应,目标产物收率最佳可达到87.32%。同时根据产物的分布对该反应的反应历程进行推导,指出该反应为E2消除过程。Based on the original research,from the perspective of industrial preparation,the process conditions for the preparation of perfluorobutadiene with 1,4-diiodoperfluorobutane as raw materials were optimized,and suitable reaction conditions were determined as follows:the Grignard reagent prepared from benzene bromine in ether solvent reacted with 1,4-diiodoperfluorobutane in tetrahydrofuran solvent at a feed rate of 20 mL·min^(-1) and a vacuum of 6.7 k Pa.Under above conditions,the target product yield was the best,reached 87.32%.In this study,the reaction mechanism was deduced according to the product,and the reaction was determined to be the E2 elimination process.

关 键 词：全氟丁二烯 1 4-二碘全氟丁烷 合成 格式试剂 

分 类 号：TQ031.2[化学工程]