Synthesis of Heterodimetallic Iridium–Palladium Complexes Containing Two Axes of Chirality: Study of Sequential Catalytic Properties
comunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
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http://dx.doi.org/10.1002/ejic.201300667 |
Metadata
Title
Synthesis of Heterodimetallic Iridium–Palladium Complexes Containing Two Axes of Chirality: Study of Sequential Catalytic PropertiesDate
2013-09Publisher
WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimISSN
1099-0682Type
info:eu-repo/semantics/articlePublisher version
http://onlinelibrary.wiley.com/doi/10.1002/ejic.201300667/abstractSubject
Abstract
The reaction of [Cp*Cl2Ir(triazolium-ylidene)]BF4 (Cp* = pentamethylcyclopentadienyl) with chiral orthometalated palladium dimers results in facile bridge splitting to afford heterodimetallic Ir–Pd* complexes. The ... [+]
The reaction of [Cp*Cl2Ir(triazolium-ylidene)]BF4 (Cp* = pentamethylcyclopentadienyl) with chiral orthometalated palladium dimers results in facile bridge splitting to afford heterodimetallic Ir–Pd* complexes. The structural characteristics of these complexes show the presence of different isomers as a consequence of hindered rotation about the M–Ccarbene bond (M = Ir/Pd). The heterodimetallic complexes contain two axes of chirality related to each metal. The crystal structure of one heterodimetallic iridium–palladium complex derived from the chiral N,N-dimethylbenzylamine ligand is described and contains two of the rotamers. The Ir/Pd* complexes have been tested in a sequence of two catalytic reactions, which implies the isomerization and asymmetric hydrophosphination of 1,3-diphenylpropargyl alcohol. All the catalysts show high activity in the overall reaction process and excellent regioselectivity, although the enantioselectivities were low. [-]
Is part of
European Journal of Inorganic Chemistry (2013), 27, p. 4764–4769, September 2013Rights
Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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