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Zinc triflate

Zinc trifluoromethanesulfonate or zinc triflate is the zinc salt of trifluoromethanesulfonic acid. It is commonly used as a Lewis acid catalyst, e.g. in silylations.

A white powder, zinc triflate is commercially available, though some workers have experienced inconsistent results with zinc triflate from different sources. If desired, it may be prepared from reacting trifluoromethanesulfonic acid with zinc metal in acetonitrile, or with zinc carbonate in methanol:

:Zn + 2 HOTf → Zn(OTf)2 + H2 :ZnCO3 + 2 HOTf → Zn(OTf)2 + H2O + CO2 (OTf = CF3SO3)

References

References

  1. (2005). "Silylation of 1-alkynes with chlorosilanes promoted by Zn(OTf)2: an efficient way to the preparation of alkynylsilanes". [[Tetrahedron Letters]].
  2. (2008). "Zinc-Catalyzed Silylation of Terminal Alkynes". [[J. Org. Chem.]].
  3. J. E. D. Kirkham, T. D. L. Courtney, V. Lee and J. E. Baldwin. (2005). "Asymmetric synthesis of cytotoxic sponge metabolites R-strongylodiols A and B and an analogue". [[Tetrahedron (journal).
  4. J. Lombard, S. Romain, S. Dumas, J. Chauvin, M.-N. Collomb, D. Daveloose, A. Deronzier and J.-C. Leprêtre. (2005). "Tetranuclear Polypyridyl Complexes of RuII and FeII: Synthesis, Electrochemical, Photophysical and Photochemical Behaviour". [[European Journal of Inorganic Chemistry]].
  5. (1983). "Magnesium and zinc-catalyzed thioketalization". [[Tetrahedron Letters]].
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zinc-compounds triflates acid-catalysts
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