申请人:Merck & Co., Inc.
公开号:US04140719A1
公开(公告)日:1979-02-20
A method of preparing 2,4-difluoroaniline by reacting 2,4,5-trichloronitrobenzene with a fluorinating agent in the presence of a solid-liquid phase interface, and utilizing a phase transfer catalyst to form 2,4-difluoro-5-chloronitrobenzene, followed by hydrogenation with hydrogen in the presence of a hydrogenation catalyst to form 2,4-difluoroaniline.
一种制备2,4-二氟苯胺的方法是,在固液相界面存在下,通过用氟化剂使2,4,5-三氯硝基苯与之反应,并利用相转移催化剂形成2,4-二氟-5-氯硝基苯,随后在氢化催化剂存在下,用氢气进行氢化反应,形成2,4-二氟苯胺。