Silver hexafluoroantimonate AgSbF

These compounds perform a dual function in synthesis procedures. The introduction of a complex anion assists in the stabilization of the desired product and the generation of unique intermediates by chloride displacement, eg, silver hexafluorophosphate, AgPF, forms adducts with neutral diamagnetic organometaHics which can act as controUed sources of highly reactive cations (29). Silver hexafluoroantimonate, AgSbF, is an electrophilic... 

Two block copolymers of trimethylcellulose-b-polyoxyethylene have been reported (139). The trimethylcellulose blocks containing one a-chloro ether end were treated with silver hexafluoroantimonate, AgSbF, in THF solution between — 10 C and + 23 C to facilitate a living cationic THF polymerization of polyoxytetramethylene blocks, as shown in Fig. 8. 

The silver fluorocomplexes, ie, silver hexafluoroantimonate [26042-64-8], AgSbF silver hexafluorophosphate [26042-63-7], AgPF silver tetrafluoroborate [14104-20-2], AgBF and other salts such as silver trifluoromethane sulfonate [2923-28-6], CF SO Ag, and silver trifluoroacetate [2966-50-9], CF COOAg, play an important role in the synthesis of organic compounds and have gained potential industrial importance. 

C-C bond formatirm is a major task in synthetic chemistry, and direct C-C bond formation through sp C-H transformation is an ideal method. Up to date, only a few examples were reported via silver catalysts in this field. In 1996, Burgess and coworkers described the earliest work of silver-mediated intramolecular carbene insertion toward C-H bonds (Scheme 2) [14]. They examined 96 potential systems of ligand/metal/solvent combinations to optimize such a C-H insertion reaction. Silver hexafluoroantimonate(V) (AgSbFe) together with bis(oxazolidine) ligand L in THF showed an unexpected activity and gave desired insertion products in moderate yield (44%) and diastereoselectivity (2.7 1). 

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