Enantioselective hydrosilylation with a chiral N-heterocyclic carbene complex of rhodium(I) [1]

Abstract

Both enantiomers of the chiral rhodium-NHC complex [(4X, 5X)-1,3-bis[2,6-diisopropyl-phenyl]-4,5-ditert-butylimidazolidine-2-ylidene][1, 5-cyclooctadiene]-iodo-rhodium(I) with X = R, S were applied as catalysts for the asymmetric hydrosilylation of prochiral ketones. The influence of employed solvent, substrate, silane, and catalyst enantiomer on the catalytic activity and the enantioselectivity of the desired product was investigated. © 2009 Verlag der Zeitschrift für Naturforschung, Tübingen.