申请人:Hoechst Aktiengesellschaft
公开号:US04966987A1
公开(公告)日:1990-10-30
1-Arylalkoxy-tris(dialkylamino)phosphonium salts of the formula I ##STR1## wherein the substituents R.sup.1 to R.sup.5 are equal or different and represent hydrogen, alkyl having from 1 to 6 carbon atoms which may be perfluorinated, halogen, alkoxy or alkylthio, each having from 1 to 6 carbon atoms, Y represents hydrogen or a perfluoroalkyl group C.sub.n F.sub.2n+1 having from 1 to 6 carbon atoms, X represents bromine or iodine and "Alkyl" represents an alkyl group of 1 to 3 carbon atoms, at most 3, preferably at most 2, of the groups R.sup.1 to R.sup.5 having a meaning other than hydrogen and the alkyl, alkoxy and alkylthio substituents attached to the aromatic nucleus altogether containing preferably at most 6 carbon atoms, in particular at most 4 carbon atoms. The invention also relates to a process for the preparation of the afore-mentioned phosphonium salts and to the use of the compounds of the formula I for the preparation of aromatic compounds having partly fluorinated groups of the formula V ##STR2## in which R.sup.1 to R.sup.5, X and Y have the afore-mentioned meaning, X can however also be hydrogen.
公式I的1-芳基烷氧基三(二烷基氨基)膦盐,其中取代基R1至R5相等或不同,分别代表氢、含有1至6个碳原子的烷基,可为全氟化的、卤素、烷氧或烷硫基,每个取代基都有1至6个碳原子,Y代表氢或含有1至6个碳原子的全氟烷基CnF2n+1,X代表溴或碘,“烷基”代表1至3个碳原子的烷基,R1至R5中至多3个,优选至多2个,具有非氢含义的基团,连接到芳香核上的烷基、烷氧基和烷硫基取代基总共优选不含超过6个碳原子,特别是不含超过4个碳原子。本发明还涉及上述膦盐的制备方法以及公式V的部分氟代基芳香化合物的制备方法,其中R1至R5、X和Y具有上述含义,但X也可以是氢。