申请人:ZHEJIANG ZHONGXIN FLUORIDE MATERIALS CO., LTD.
公开号:US10745334B2
公开(公告)日:2020-08-18
The disclosure discloses a method for synthesizing 2,3,5,6-tetrafluoro-4-methoxymethyl benzyl alcohol from 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene, belongings to the technical field of organic synthesis. 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene reacts in mixed solution consisting of sulfuric acid aqueous solution and organic carboxylic acid, the obtained mixture is subjected to ester group hydrolysis reaction in the presence of an inorganic base and then to hydroxyl methylation reaction, 2,3,5,6-tetrafluoro-4-methoxymethyl benzyl alcohol is finally obtained via separation and purification, and 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene is recovered. The disclosure not only realizes the resource utilization of low-value 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene, and meanwhile has the advantages of mild reaction conditions, simple operation, high synthesis yield, good product quality and the like. The disclosure has high social and economic values.
本发明公开了一种由1,4-双(甲氧基甲基)-2,3,5,6-
四氟苯合成2,3,5,6-四
氟-4-甲氧基甲基
苯甲醇的方法,属于有机合成技术领域。1,4-双(甲氧基甲基)-2,3,5,6-
四氟苯在由
硫酸水溶液和有机
羧酸组成的混合溶液中反应,得到的混合物在
无机碱存在下进行酯基
水解反应,然后进行羟基甲基化反应、通过分离和提纯,最终得到 2,3,5,6-四
氟-4-甲氧基甲基
苯甲醇,并回收 1,4-双(甲氧基甲基)-2,3,5,6-
四氟苯。本发明不仅实现了低价值的 1,4-双(甲氧基甲基)-2,3,5,6-
四氟苯的资源化利用,而且具有反应条件温和、操作简单、合成收率高、产品质量好等优点。本发明具有很高的社会价值和经济价值。