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Abstract | Cited by

The aluminium salt [(NHC)Al(tol)(C6F5)2][B(C6F5)4], (NHC = C3H2(N(iPr2C6H3))2) is shown to behave as a Lewis superacid as it abstracts fluoride from [SbF6]−. It also acts as a Lewis acid catalyst for hydrosilyation, hydrodefluorination and Friedel–Crafts reactions.

Graphical abstract: The Lewis superacidic aluminium cation: [(NHC)Al(C6F5)2]+

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