Selective Hydrogenation of Aldehydes Using a Well-Defined Fe(II) PNP Pincer Complex in Biphasic Medium.
Stefan Weber, Julian Brünig, Veronika Zeindlhofer, Christian Schröder, Berthold Stöger, Andreas Limbeck, Karl Kirchner, Katharina Bica
Author Information
Stefan Weber: Institute of Applied Synthetic Chemistry Vienna University of Technology Getreidemarkt 9/163-AC Wien A-1060 Austria.
Julian Brünig: Institute of Applied Synthetic Chemistry Vienna University of Technology Getreidemarkt 9/163-AC Wien A-1060 Austria.
Veronika Zeindlhofer: Department of Computational Biological Chemistry University of Vienna Faculty of Chemistry Währingerstrasse 17 Wien A-1090 Austria.
Christian Schröder: Department of Computational Biological Chemistry University of Vienna Faculty of Chemistry Währingerstrasse 17 Wien A-1090 Austria.
Berthold Stöger: X-Ray Center Vienna University of Technology Getreidemarkt 9 Wien A-1060 Austria. ORCID
Andreas Limbeck: Institute of Chemical Technologies and Analytics Vienna University of Technology Getreidemarkt 9/163-AC Wien A-1060 Austria. ORCID
Karl Kirchner: Institute of Applied Synthetic Chemistry Vienna University of Technology Getreidemarkt 9/163-AC Wien A-1060 Austria. ORCID
Katharina Bica: Institute of Applied Synthetic Chemistry Vienna University of Technology Getreidemarkt 9/163-AC Wien A-1060 Austria. ORCID
A biphasic process for the hydrogenation of aldehydes was developed using a well-defined iron (II) PNP pincer complex as model system to investigate the performance of various ionic liquids. A number of suitable hydrophobic ionic liquids based on the N(Tf) anion were identified, allowing to immobilize the iron (II) catalyst in the ionic liquid layer and to facilitate the separation of the desired alcohols. Further studies showed that targeted Brønsted basic ionic liquids can eliminate the need of an external base to activate the catalyst.
