申请人:Hoechst Aktiengesellschaft
公开号:US05313001A1
公开(公告)日:1994-05-17
Process for the preparation of .alpha.-fluorostyrene from fluoroolefins: ##STR1## Z=hydrogen, fluorine, chlorine X=iodine, bromine, chlorine. A halogenated aromatic (I) is reacted with a fluorine-substituted ethylene (II) in the presence of a palladium catalyst to give an .alpha.-fluorostyrene (III), it being possible for R to be a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.4 -alkyl group, a C.sub.1 -C.sub.5 -alkoxy group, an amino, alkylamino or dialkylamino group, an aryl radical or a fused aryl or heteroaryl ring, a hydroxyl or hydroxyalkyl group, a trifluoromethyl or perfluoroalkyl group or a nitro group.
从氟烯烃制备α-氟基苯乙烯的方法:## STR1 ##其中,Z为氢、氟、氯,X为碘、溴、氯。在钯催化剂的存在下,将卤代芳香烃(I)与氟代乙烯(II)反应,得到α-氟基苯乙烯(III),其中R可以是氢原子、卤素原子、C.sub.1-C.sub.4烷基、C.sub.1-C.sub.5烷氧基、氨基、烷基氨基或二烷基氨基、芳基基团或融合的芳基或杂环基、羟基或羟基烷基、三氟甲基或全氟烷基或硝基基团。