A range of amines catalyse the oxidative addition (OA) of H to [(MeSi)CH]Sn (), forming [(MeSi)CH]SnH (). Experimental and computational studies point to 'frustrated Lewis pair' mechanisms in which acts as a Lewis acid and involve unusual late transition states; this is supported by the observation of a kinetic isotope effect for EtN. When DBU is used the energetics of H activation are altered, allowing an equilibrium between , and adduct [·DBU] to be established, thus demonstrating reversible oxidative addition/reductive elimination (RE) of H at a single main group centre.
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| http://dx.doi.org/10.1039/c8sc03110j | DOI Listing |
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