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.-.
本发明涉及一般式为A-I.sup.+ --B X.sup.-的碘化物盐,其中A是一般式为##STR1##的基团,其中C是具有6至14个碳原子的单价芳香烃基团或含有至少一个氧和/或硫原子且芳环中含有5至14个原子的单价芳香烃基团,D、E和F分别是C的取代基,其中D是式为--(O).sub.x --(R).sub.y --SiR1/3的基团,E是式为--OR.sup.2的基团,F是式为--R.sup.3的基团,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,而R、R.sup.1、R.sup.2和R.sup.3如权利要求书中所定义;B是式为##STR2##的基团,其中E和F如上所定义,可以分别结合到苯环的2、3、4、5或6位,d为0、1或2,e为0、1或2,X.sup.-是对甲苯磺酸根离子或弱亲核或非亲核阴离子Y.sup.-的选择,所述Y.sup.-选自群组,包括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.-。