Influence of Bis‐NHC Ligand on Platinum‐Catalyzed Hydrosilylation of Internal Alkynes

Synthesis and characterization of a new bifunctional N‐heterocyclic carbene precursor with sterically expanded substituents is described. The obtained NHC is employed in the catalytic system for hydrosilylation of internal alkynes providing a fully selective and effective process in mild conditions...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2023-02, Vol.26 (4), p.n/a
Main Authors: Bołt, Małgorzata, Mermela, Aleksandra, Żak, Patrycja
Format: Article
Language:English
Subjects:
Alkynes
catalysis
Chemical synthesis
Hydrosilylation
Inorganic chemistry
Ligands
N-heterocyclic carbenes
platinum
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Summary:Synthesis and characterization of a new bifunctional N‐heterocyclic carbene precursor with sterically expanded substituents is described. The obtained NHC is employed in the catalytic system for hydrosilylation of internal alkynes providing a fully selective and effective process in mild conditions under air. Comparison of the performance of the newly developed catalytic system with its analogs based on monofunctional NHC ligands proves that the presence of two metal atoms and the proper design of the steric environment around the metal center ensure a definitely greater activity in the hydrosilylation process. Two is better than one! New bis‐NHC ligand enable effective hydrosilylation of internal alkynes in mild conditions. Our bulky bifunctional N‐heterocyclic carbene shows better activity than monofunctional ones. This catalytic system provides a simple method to alkyne silanes synthesis under air atmosphere and at low temperature.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.202200622