期刊
DALTON TRANSACTIONS
卷 51, 期 35, 页码 13246-13254出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2dt02276a
关键词
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资金
- SBO (D2M)
- Research Foundation-Flanders (FWO)
- BOF
- iBOF C3 project
- Research Foundation -Flanders (FWO) [AUGE/11/029]
- Ghent University
- FWO [11I6921N]
In this study, a simple and scalable method for synthesizing widely used NHC-metal-diketonate complexes was reported. The complexes were synthesized for the first time under mild, aerobic conditions and in excellent yields. Characterization of the complexes revealed a bidentate binding mode of the diketonate ligand to copper and a C-bound binding mode to gold. Furthermore, the gold complex showed high efficiency as a pre-catalyst for the hydrocarboxylation of alkynes.
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.
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