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

Abstract

AbstractSynthesis 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.