100108-96-1Relevant articles and documents
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
-
Page 12-13, (2008/06/13)
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 MYμ?qξq, where M represents a μ-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 ξ? 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 (—CF2—); and where q is an integer advantageously chosen within the closed range (comprising the limits) ranging from 1 to (μ?1) (that is to say, 1 or 2 when μ is 3). The present application also relates to processes for the preparation of the promoter.