Publication Date:
2012-09-09
Description:
Metal salts of triflic acid, CF 3 SO 2 OH and of triflimidic acid, [CF 3 SO 2 ] 2 NH, often called “Lewis superacids”, are powerful catalysts for several classes of reactions. Typical applications developed at the Institut de Chimie de Nice during the last decade, mostly in the domain of inter- and intramolecular carbon–carbon, carbon–oxygen and carbon–sulfur bond formation, are illustrated. During the last three years, the characterization of metal triflates and triflimides by electrospray mass spectrometry was also accomplished in our Institute. Displacement of one anion of the salt by strong neutral ligands was developed as a mean for generating characteristic positive ions. In an effort toward the quantitative description of the ligand/metal bonding and the catalytic role of the Lewis acid, a ligand competition method was devised. An exploratory study attests that subtle structural effects on the donor/acceptor interaction can be evidenced using this simple mass spectrometric method. Copyright © 2012 John Wiley & Sons, Ltd. This Mini Review deals with the progress made during the last decade at the Institut de Chimie de Nice regarding the chemistry of metal triflates and triflimides: new methods of preparation; general scope of their applications as catalysts, electrospray ionization mass spectrometry (ESI-MS) for the characterization of these highly reactive salts; advances toward a quantitative description of the coordinating properties of these “Lewis superacids” by ESI-MS.
Print ISSN:
0894-3230
Electronic ISSN:
1099-1395
Topics:
Chemistry and Pharmacology
,
Physics
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