申请人:Wacker-Chemie GmbH
公开号:US05468890A1
公开(公告)日:1995-11-21
The invention concerns iodonium salts of the general formula A-I.sup.+ --B X.sup.-, in which A is a group of the general formula ##STR1## in which C is a monovalent aromatic hydrocarbon group with 6 to 14 carbon atoms or a monovalent aromatic hydrocarbon group containing at least one oxygen and/or sulphur atom and with 5 to 14 atoms in the aromatic ring, D, E and F are each substituents of C, D being a group of the formula --(O).sub.x --(R).sub.y --SiR1/3, E being a group of the formula --OR.sup.2, F being a group of the formula --R.sup.3, a being 1, 2, or 3, b being 0, 1 or 2, c being 0, 1 or 2, x being 0 or 1 and y being 0 or 1, and R, R.sup.1, R.sup.2 and R.sup.3 are as defined in claim 1; B is a group of the formula ##STR2## in which E and F, which are as defined above, may each be bound to the 2, 3, 4, 5 or 6 position in the benzene ring, d is 0, 1 or 2, e is 0, 1 or 2 and X.sup.- is a tosylate anion or a weakly nucleophilic or non-nucleophilic anion Y.sup.- selected from the group comprising CF.sub.3 CO.sub.2.sup.-, BF.sub.4.sup.-, PF.sub.4.sup.-, AsF.sub.6.sup.-, SbF.sub.6.sup.-, ClO.sub.4.sup.-, HSO.sub.4.sup.- and CF.sub.3 SO.sub.3.sup.-.
本发明涉及一般式A-I.sup.+ --B X.sup.-的碘鎓盐,其中A是以下一般式的基团:##STR1## 其中C是具有6至14个碳原子的一价芳香烃基或含有至少一个氧和/或硫原子且具有5至14个芳香环中原子的一价芳香烃基,D、E和F分别是C的取代基,其中D是以下式子的基团:--(O).sub.x --(R).sub.y --SiR1/3,E是以下式子的基团:--OR.sup.2,F是以下式子的基团:--R.sup.3,a为1、2或3,b为0、1或2,c为0、1或2,x为0或1,y为0或1,R、R.sup.1、R.sup.2和R.sup.3如权利要求1所定义;B是以下式子的基团:##STR2## 其中E和F,如上所定义,可以各自与苯环中的2、3、4、5或6位置结合,d为0、1或2,e为0、1或2,X.sup.-是tosylate阴离子或从CF.sub.3 CO.sub.2.sup.-,BF.sub.4.sup.-,PF.sub.4.sup.-,AsF.sub.6.sup.-,SbF.sub.6.sup.-,ClO.sub.4.sup.-,HSO.sub.4.sup.-和CF.sub.3 SO.sub.3.sup.-的群组中选择的弱亲核或非亲核阴离子Y.sup.-。