Composition and compound based on salt (s) of metals and of acid exhibiting a sulfonyl group carried by a perhalogenated carbon and their use as lewis acid
申请人:——
公开号:US20040116733A1
公开(公告)日:2004-06-17
The present invention relates to a bismuth-type promoter and its use as a Lewis acid catalyst for acylation reactions of aromatic compounds. The promoter corresponds to the formula MY
&mgr;−q
&xgr;
q
, where M represents a &mgr;-valent and at least trivalent element in the cationic form, preferably known to give Lewis acids, where Y is a monovalent anion or a monovalent anionic functional group, where &xgr;
−
represents an anion or an anionic functional group carrying a sulfonyl functional group carried by a perhalogenated atom, preferably a perfluorinated atom, more preferably a perfluoromethylene (—CF
2
—); and where q is an integer advantageously chosen within the closed range (comprising the limits) ranging from 1 to (&mgr;−1) (that is to say, 1 or 2 when &mgr; is 3). The present application also relates to processes for the preparation of the promoter.
本发明涉及一种铋型促进剂及其作为芳香化合物酰化反应的路易斯酸催化剂的用途。促进剂对应于公式MY &mgr;−q &xgr; q,其中M代表阳离子形式中的一个&mgr;-价和至少三价元素,最好是已知能提供路易斯酸的元素,其中Y是一价阴离子或一价阴离子功能团,&xgr;−代表携带由全氟化原子携带的磺酰基功能团的阴离子或阴离子功能团,最好是全氟化原子,更好地是全氟甲基(—CF2—);q是一个整数,优选地选择在从1到(&mgr;-1)的封闭范围内(包括限制)的范围内(也就是说,当&mgr;为3时为1或2)。本申请还涉及制备促进剂的方法。