Journal of Molecular Catalysis A-Chemical, Vol.222, No.1-2, 59-73, 2004
Hydrogen bonding ligand functionality and catalytic selectivity in homogeneous hydrosilylation of enones with rhodium complexes
Hydrogen bonding ligand functionality is introduced into the N-heterocyclic carbene (NHC) ligand of [Rh(cod)(NHC)(PPh3)]OTf (cod = 1,5-cyclooctadiene) to look for molecular recognition effects on the selectivity of the reduction of PhCH=CHCOMe by Et3SiH. Selectivity differences are indeed found between the control catalyst and those containing molecular recognition groups, particularly in the E:Z ratios of the silyl enol ether product. (C) 2004 Elsevier B.V. All rights reserved.