Iron Achieves
Noble Metal Reactivity and Selectivity:
Highly Reactive and Enantioselective Iron Complexes as Catalysts in
the Hydrosilylation of Ketones
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Abstract
Chiral iron alkyl and iron alkoxide
complexes bearing boxmi pincers
as stereodirecting ligands have been employed as catalysts for enantioselective
hydrosilylation reactions with unprecedented activity and selectivity
(TOF = 240 h<sup>–1</sup> at −40 °C, ee up to 99%
for alkyl aryl ketones), which match the performance of previously
established noble-metal-based catalysts. This shows the potential
of earth-abundant metals such as iron for replacing platinummetals
without any drawbacks for the reaction design