Hydrosilylation of Aldehydes and Ketones Catalysed by Bis(phosphinite) Pincer Platinum Hydride Complexes
Authors:
- 6 April 2020
- journal article
- research article
- Published by Wiley in Advanced Synthesis & Catalysis
- Vol. 362 (13) , 2709-2715
Abstract
Bis(phosphinite) pincer platinum hydride complexes, [2,6‐(R2PO)2C6H3]PtH (R=tBu, iPr), were synthesized, characterized and applied to the hydrosilylation of aldehydes and ketones. NMR study and single crystal X‐ray diffraction analysis indicated that the hydrides in these two platinum complexes are comparatively less hydridic: down‐field 1H NMR resonances (0.71 and 0.98 ppm) and weak Pt−H interactions were observed. Both the platinum complexes were found to be good catalysts for the hydrosilylation of aldehydes and ketones with phenylsilane. The corresponding alcohols were isolated in good to excellent yields following basic hydrolysis of the resultant hydrosilylation products and turnover frequencies (TOFs) up to 3200 h−1 were achieved at 60 °C in toluene, which are much higher than those of the hydrosilylation catalysed by the corresponding nickel pincer hydride complexes. A possible mechanism for the present hydrosilylation process was discussed. magnified imageKeywords
Funding Information
- National Natural Science Foundation of China (21571052, U1804253, 21771057)
This publication has 58 references indexed in Scilit:
- Iron Hydride Complexes Bearing Phosphinite-Based Pincer Ligands: Synthesis, Reactivity, and Catalytic Application in Hydrosilylation ReactionsOrganometallics, 2011
- Hydrosilylation of Carbonyl-Containing Substrates Catalyzed by an Electrophilic η1-Silane Iridium(III) ComplexOrganometallics, 2010
- Reactions of the Platinum (Tri-tert-butylphosphine) Group with Bridging SbPh2 Ligands in Rhenium−Antimony Carbonyl ComplexesInorganic Chemistry, 2010
- OLEX2: a complete structure solution, refinement and analysis programJournal of Applied Crystallography, 2009
- Hydrosilylation of Aldehydes and Ketones Catalyzed by Nickel PCP-Pincer Hydride ComplexesOrganometallics, 2008
- A short history of SHELXActa Crystallographica Section A Foundations of Crystallography, 2007
- Reaction Chemistry of Complexes Containing Pt-H, Pt-SH, or Pt-S Fragments: From Their Apparent Simplicity to the Maze of Reactions Underlying Their InterconversionChemistry – A European Journal, 2007
- An iron-catalysed hydrosilylation of ketonesChemical Communications, 2006
- Platinum(II) complexes of ferrocenylphosphines as hydrosilylation catalysts. Crystal structure of (P-N)PtCl2 (P-N = Fe(.eta.5-C5H5)(.eta.5-C5H3(P(CHMe2)2)CHMeNMe2-1,2)Inorganic Chemistry, 1987
- The Addition of Silicon Hydrides to Olefinic Double Bonds. Part II. The Use of Group VIII Metal CatalystsJournal of the American Chemical Society, 1957