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  4. Base-Free Transfer Hydrogenation with an Ionic-Liquid-Supported Ruthenium eta(6)-Arene Bis(pyrazolyl)methane Catalyst
 
research article

Base-Free Transfer Hydrogenation with an Ionic-Liquid-Supported Ruthenium eta(6)-Arene Bis(pyrazolyl)methane Catalyst

Sepulveda, Francisco
•
Carrion, M. Carmen
•
Phillips, Andrew D.  
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2017
European Journal Of Inorganic Chemistry

Ruthenium complexes of the type [RuCl(eta(6)-arene)-(NN)]X (X = BF4 or BPh4) featuring an eta(6)-arene ligand modified with an imidazolium ring and incorporating the bis(azo) chelating (NN) ligands 2-hydroxyphenylbis(3,5-dimethylpyrazol-1-yl) methane or 2-nitrophenylbis(3,5-dimethylpyrazol-1-yl) methane are reported. The catalytic activities of the complexes were evaluated in the transfer hydrogenation of benzaldehyde to benzyl alcohol with iPrOH as the hydrogen donor in the absence of a base and under biphasic conditions; one of the two phases was iPrOH, and the other was an ionic liquid. The catalysts featuring the imidazolium-modified eta(6)-arene could be recycled and reused with only a minor decrease in substrate conversion after multiple reaction cycles. The reaction rate was strongly influenced by the type of ionic liquid employed in the biphasic system.

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Type
research article
DOI
10.1002/ejic.201601207
Web of Science ID

WOS:000393405500014

Author(s)
Sepulveda, Francisco
Carrion, M. Carmen
Phillips, Andrew D.  
Jalon, Felix A.
Dyson, Paul J.  
Manzano, Blanca R.
Date Issued

2017

Publisher

Wiley-Blackwell

Published in
European Journal Of Inorganic Chemistry
Volume

2017

Issue

3

Start page

630

End page

638

Subjects

Hydrogenation

•

Ionic liquids

•

Ruthenium

•

Biphasic catalysis

•

N ligands

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LCOM  
Available on Infoscience
March 27, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/135964
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