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Issue 27, 2020
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Efficient and selective alkene hydrosilation promoted by weak, double Si–H activation at an iron center

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Abstract

Cationic iron complexes [Cp*(iPr2MeP)FeH2SiHR]+, generated and characterized in solution, are very efficient catalysts for the hydrosilation of terminal alkenes and internal alkynes by primary silanes at low catalyst loading (0.1 mol%) and ambient temperature. These reactions yield only the corresponding secondary silane product, even with SiH4 as the substrate. Mechanistic experiments and DFT calculations indicate that the high rate of hydrosilation is associated with an inherently low barrier for dissociative silane exchange (product release).

Graphical abstract: Efficient and selective alkene hydrosilation promoted by weak, double Si–H activation at an iron center

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Supplementary files

Article information


Submitted
25 Mar 2020
Accepted
16 Jun 2020
First published
18 Jun 2020

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2020,11, 7070-7075
Article type
Edge Article

Efficient and selective alkene hydrosilation promoted by weak, double Si–H activation at an iron center

P. W. Smith, Y. Dong and T. D. Tilley, Chem. Sci., 2020, 11, 7070
DOI: 10.1039/D0SC01749C

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