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

Abstract

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.

Dibromo–Isonitrile and N-acyclic Carbene Complexes of Platinum(II): Synthesis and Reactivity

“…In addition to the neutral ligands, the leaving groups as well can play an important role in modulating the properties of anticancer complexes [11,12]. Considering the wide applications described for carbene metal complexes in both bioinorganics [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] and catalysis [31][32][33][34][35][36][37][38][39][40][41][42][43][44], we hereby describe the synthesis of new [PtBr 2 (PPh 3 )(CNR)] and [PtBr 2 (PPh 3 )(NAC)] compounds, in order to compare their properties with those of their chlorinated counterparts.…”

Electrifying synthesis of organosilicon compounds – from electrosynthesis to electrocatalysis

“…Therefore, a very important step is searching for an alternative to highly expensive oxidants, as well as catalysts based on platinum or rhodium. [124][125][126][127][128][129] Furthermore, in terms of the electrochemical system, the authors used readily available stainless steel electrodes. Similarly to Lin, 65 Zhang, 86 and He, 97 also Poisson and coworkers used an IKA® ElectraSyn 2.0, which ensures the reproducibility of the obtained results.…”