Chapter 5: Non-classical N-Heterocyclic Carbene Complexes
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Published:26 Nov 2010
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Special Collection: 2010 ebook collection , 2010 ebook collection , 2000-2010 organic chemistry subject collection , 2010 organic chemistry subject collectionSeries: Catalysis Series
A. Krüger and M. Albrecht, in N-Heterocyclic Carbenes, ed. S. Diez-Gonzalez, The Royal Society of Chemistry, 2010, ch. 5, pp. 134-165.
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The expansion of N-heterocyclic carbenes as ligands for transition metals to mesoionic ligand systems has led to the discovery of a wide range of non-classical carbene-type ligands. These non-classical carbene-type ligands are characterised by a significantly lower heteroatom stabilisation of the (putative) free carbene, a situation that also affects the ligand donor properties and hence the reactivity of the coordinated metal centre. In consequence, a number of attractive transition metal-catalysed processes have been disclosed in recent years, predominantly in the areas of cross-coupling, hydrogenations, and olefin metathesis reactions.
