Journal
CHEMICAL RECORD
Volume 21, Issue 5, Pages 1130-1143Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/tcr.202100041
Keywords
Zinc; N-heterocyclic carbene; Lewis acids; catalysis
Categories
Funding
- CNRS
- University of Strasbourg
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This review discusses the recent advancements in the synthesis, structure, and catalytic applications of Zn-NHC species, which have gained attention for their enhanced stability and hydrolytic stability compared to traditional Zn organometallics. NHC stabilization has enabled access to unprecedented Zn species, leading to effective catalysis under mild conditions. The potential of NHC-Zn species for stabilizing novel Zn species and their use in various catalytic applications is still emerging, with a wide range of NHC structures available to promote future developments in the field.
The present account reviews the most recent noteworthy developments on the synthesis, structure and catalytic applications of Zn-NHC species, a class of complexes that have attracted attention over the past five to ten years due to their enhanced robustness and hydrolytic stability versus classical Zn organometallics. In particular, thanks to NHC stabilization, access to unprecedented Zn species were recently achieved, including two-coordinate Zn(II) organocations and thermally stable molecularly well-defined Zn hydride species, opening the way to effective Zn-mediated hydro-silylation/-boration catalysis of various unsaturated substrates under mild conditions. The potential of NHC-Zn species for the stabilization of unprecedented Zn species and use in various catalytic applications is only emerging and the vast array of readily available NHC structures should promote future developments of the field.
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