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Issue 1, 2014
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Diverse reactions of N-heterocyclic carbenes with an alkynylborane and isolation of a reactive zwitterionic borataallene

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Abstract

Ethynyldimesitylborane (1) is synthesised via salt elimination and its reactivity towards NHCs is studied. Depending on their size, NHCs attack either at the boron atom or at the β-alkynyl carbon atom. Steric control over the reaction was probed by reactions with N-heterocyclic carbenes yielding a carbene–borane adduct (2), a 1-boraindane (3), and the first structurally characterised borataallene (4).

Graphical abstract: Diverse reactions of N-heterocyclic carbenes with an alkynylborane and isolation of a reactive zwitterionic borataallene

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Publication details

The article was received on 11 Sep 2013, accepted on 21 Oct 2013 and first published on 22 Oct 2013


Article type: Communication
DOI: 10.1039/C3CC46947F
Citation: Chem. Commun., 2014,50, 97-99
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    Diverse reactions of N-heterocyclic carbenes with an alkynylborane and isolation of a reactive zwitterionic borataallene

    R. Bertermann, H. Braunschweig, C. K. L. Brown, A. Damme, R. D. Dewhurst, C. Hörl, T. Kramer, I. Krummenacher, B. Pfaffinger and K. Radacki, Chem. Commun., 2014, 50, 97
    DOI: 10.1039/C3CC46947F

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