Pt II -N-Heterocyclic Carbene Complexes in Solvent-Free Alkene Hydrosilylation
Herein, we report the catalytic activity of a series of platinum(II) pre-catalysts, bearing N-heterocyclic carbene (NHC) ligands, in the alkene hydrosilylation reaction. Their structural and electronic properties are fully investigated using X-ray diffraction analysis and nuclear magnetic resonance...
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| Veröffentlicht in: | Chemistry : a European journal 2023-07, Vol.29 (40), p.e202301259 |
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| container_issue | 40 |
| container_start_page | e202301259 |
| container_title | Chemistry : a European journal |
| container_volume | 29 |
| creator | Maliszewski, Benon P Bayrakdar, Tahani A C A Lambert, Perrine Hamdouna, Lama Trivelli, Xavier Cavallo, Luigi Poater, Albert Beliš, Marek Lafon, Olivier Van Hecke, Kristof Ormerod, Dominic Cazin, Catherine S J Nahra, Fady Nolan, Steven P |
| description | Herein, we report the catalytic activity of a series of platinum(II) pre-catalysts, bearing N-heterocyclic carbene (NHC) ligands, in the alkene hydrosilylation reaction. Their structural and electronic properties are fully investigated using X-ray diffraction analysis and nuclear magnetic resonance spectroscopy (NMR). Next, our study presents a structure-activity relationship within this group of pre-catalysts and gives mechanistic insights into the catalyst activation step. An exceptional catalytic performance of one of the complexes is observed, reaching a turnover number (TON) of 970 000 and a turnover frequency (TOF) of 40 417 h
at 1 ppm catalyst loading. Finally, an attractive solvent-free and open-to-air alkene hydrosilylation protocol, featuring efficient platinum removal (reduction of residual Pt from 582 ppm to 5.8 ppm), is disclosed. |
| doi_str_mv | 10.1002/chem.202301259 |
| format | Article |
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at 1 ppm catalyst loading. 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| title | Pt II -N-Heterocyclic Carbene Complexes in Solvent-Free Alkene Hydrosilylation |
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