First Nickel-MOF Catalyst for Alkene Hydrosilylation

  • Author: ChemistryViews.org
  • Published: 26 February 2019
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Chemical Science/Royal Society of Chemistry
  • Associated Societies: Royal Society of Chemistry (RSC), UK
thumbnail image: First Nickel-MOF Catalyst for Alkene Hydrosilylation

Organosilanes are useful intermediates in organic synthesis and precursors for polymers. They are commonly synthesized via the catalytic hydrosilylation of alkenes. This usually requires expensive homogeneous Pt-based catalysts. Heterogeneous catalysts for this reaction that are based on cheaper metals could make the reaction more practical and cost-effective.


Xile Hu and colleagues, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland, have developed the first nickel-based metal-organic framework (MOF) catalysts which promote the anti-Markovnikov hydrosilylation of alkenes. The team prepared the catalyst from 4,4'-biphenyldicarboxylic acid and NiCl2·6 H2O. The resulting MOF has a sheet-like, crystalline structure.


The Ni-based MOF was used to catalyze the hydrosilylation of a wide variety of alkenes with diphenylsilane. The desired products (pictured) were obtained in good to excellent yields with anti-Markovnikov selectivity. The catalyst is easy to remove and recycle, achieves turn-over numbers of up to 9,500, and retains good activity even after 10 uses.


 

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