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A Mechanistically and Operationally Simple Route to Metal-N-Heterocyclic Carbene (NHC) Complexes. | LitMetric
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A Mechanistically and Operationally Simple Route to Metal-N-Heterocyclic Carbene (NHC) Complexes.

Nikolaos V Tzouras Fady Nahra Laura Falivene Luigi Cavallo Marina Saab Kristof Van Hecke Alba Collado Christopher J Collett Andrew D Smith Catherine S J Cazin Steven P Nolan

Chemistry

Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281,S-3, 9000, Ghent, Belgium.

Published: April 2020

We have been puzzled by the involvement of weak organic and inorganic bases in the synthesis of metal-N-heterocyclic carbene (NHC) complexes. Such bases are insufficiently strong to permit the presumed required deprotonation of the azolium salt (the carbene precursor) prior to metal binding. Experimental and computational studies provide support for a base-assisted concerted process that does not require free NHC formation. The synthetic protocol was found applicable to a number of transition-metal- and main-group-centered NHC compounds and could become the synthetic route of choice to form M-NHC bonds.

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http://dx.doi.org/10.1002/chem.202000564DOI Listing

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