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Issue 39, 2010
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Silylium ions in catalysis

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The controversy over “how free the trivalent silicon cation is” placed the emphasis on their spectroscopic and crystallographic characterisation. Those investigations contributed substantially to the understanding of the role of σ or π Lewis basic molecules in the chemistry of extremely potent Lewis acids, culminating in the discovery of innocent, that is non-coordinating, anions and an X-ray molecular structure. Synthetic uses of such reactive intermediates are however underrepresented yet a few recent contributions offer a glimpse of their true potential. This perspective provides a concise overview of known silylium ions, followed by examples of their uses as catalysts in C–F bond activation and C–C bond formation, namely challenging Diels–Alder reactions.

Graphical abstract: Silylium ions in catalysis

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The article was received on 15 Feb 2010, accepted on 10 Mar 2010 and first published on 19 Apr 2010

Article type: Perspective
DOI: 10.1039/C003097J
Dalton Trans., 2010,39, 9176-9184

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    Silylium ions in catalysis

    H. F. T. Klare and M. Oestreich, Dalton Trans., 2010, 39, 9176
    DOI: 10.1039/C003097J

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