Bismuth(III) tris(trifluoro-methanesulfonate)

Introduction

Among several bismuth compounds described for their use in organic synthesis, [1] bismuth(III) tris(trifluoromethanesulfonate), commonly called bismuth triflate, has received increasing interest over the last few years, and many publications have reported its powerful Lewis acidity, offering a new reagent for various catalytic reactions. Bismuth(III) triflate can be prepared from cheap triphenylbismuth [2] or bismuth(III) oxide Bi₂O₃, [3] and triflic acid. The displacement of trifluoroacetate groups of bismuth(III) trifluoroacetate by an excess of triflic acid has also been reported. [4]

References

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