Improved synthetic routes to N -heterocyclic carbene-metal-diketonato complexes of gold and copper.

Autor: Ibni Hashim I; Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium. steven.nolan@ugent.be., Tzouras NV; Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium. steven.nolan@ugent.be., Ma X; Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium. steven.nolan@ugent.be., Bourda L; Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium. steven.nolan@ugent.be., Van Hecke K; Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium. steven.nolan@ugent.be., Nolan SP; Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium. steven.nolan@ugent.be., Cazin CSJ; Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium. steven.nolan@ugent.be.
Jazyk: angličtina
Zdroj: Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2022 Sep 13; Vol. 51 (35), pp. 13246-13254. Date of Electronic Publication: 2022 Sep 13.
DOI: 10.1039/d2dt02276a
Abstrakt: In our search for simple synthetic routes to N -heterocyclic carbene (NHC)-metal complexes and their derivatives, we herein report an operationally simple, expedient and scalable method to obtain the widely used NHC-metal-diketonates. The reported complexes are synthesized for the first time under mild, aerobic conditions and in excellent yields in a sustainable manner. The protocol is general with regards to the anionic co-ligand and the ancillary carbene ligands. The spectroscopic and crystallographic characterization of the complexes reveal a bidentate binding mode of the diketonate ligand to copper while the gold-congener is C-bound. Finally, the reported Au complex was shown to be an efficient pre-catalyst for the hydrocarboxylation of alkynes.
Databáze: MEDLINE
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