Scandium(III) trifluoromethanesulfonate

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Scandium(III) trifluoromethanesulfonate
Scandium triflate.png
Scandium-triflate-hydrate-xtal-293K-3D-SF.png
Identifiers
CAS number 144026-79-9 YesY
PubChem 2734571
ChemSpider 2016319 YesY
Jmol-3D images Image 1
Properties
Molecular formula C3F9O9S3Sc
Molar mass 492.16 g/mol
Hazards
MSDS Oxford MSDS
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Scandium trifluoromethanesulfonate, commonly called scandium triflate, is a chemical compound with formula Sc(SO3CF3)3, a salt consisting of scandium cations Sc3+ and triflate SO3CF3 anions.

Scandium triflate is used as a reagent in organic chemistry as a Lewis acid.[1] Compared to other Lewis acids, this reagent is stable towards water and can often be used in an organic reaction as a true catalyst rather than one used in stoichiometric amounts. The compound is prepared by reaction of scandium oxide with trifluoromethanesulfonic acid.

An example of the scientific use of scandium triflate is the Mukaiyama aldol addition reaction between benzaldehyde and the silyl enol ether of cyclohexanone with an 81% chemical yield.[2]

ScOTf3-mediated aldol condensation

References[edit]

  1. ^ Deborah Longbottom (1999). "SYNLETT Spotlight 12: Scandium Triflate". Synlett 1999 (12): 2023. doi:10.1055/s-1999-5997. 
  2. ^ S. Kobayashi (1999). "Scandium Triflate in Organic Synthesis". Eur. J. Org. Chem. 1999: 15–27. doi:10.1002/(SICI)1099-0690(199901)1999:1<15::AID-EJOC15>3.0.CO;2-B.