Activation, Tuning, and Immobilization of Homogeneous Catalysts in an Ionic Liquid/Compressed CO2 Continuous-Flow System

Andreas Bösmann; Giancarlo Franciò; Edo Janssen; Maurizio Solinas; Walter Leitner; Peter Wasserscheid

doi:10.1002/1521-3773(20010716)40:14<2697::AID-ANIE2697>3.0.CO;2-W

Activation, Tuning, and Immobilization of Homogeneous Catalysts in an Ionic Liquid/Compressed CO₂ Continuous-Flow System

Angew Chem Int Ed Engl. 2001 Jul 16;40(14):2697-2699. doi: 10.1002/1521-3773(20010716)40:14<2697::AID-ANIE2697>3.0.CO;2-W.

Authors

Andreas Bösmann¹, Giancarlo Franciò², Edo Janssen², Maurizio Solinas², Walter Leitner², Peter Wasserscheid¹

Affiliations

¹ Institut für Technische Chemie und Makromolekulare Chemie der RWTH Aachen Worringer Weg 1, 52074 Aachen (Germany) Fax: (+49) 241-8888-177.
² Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr (Germany) Fax: (+49) 208-306-2993.

PMID: 29712338
DOI: 10.1002/1521-3773(20010716)40:14<2697::AID-ANIE2697>3.0.CO;2-W

Abstract

A new immobilization scheme for enantioselective catalysts was developed by using a combination of ionic liquids and compressed CO₂ . Under continuous flow conditions, stable conversion and asymmetric induction was achieved over more than 60 h in the enantioselective Ni-catalyzed hydrovinylation of styrene. While the ionic liquid dissolves and activates the organometallic catalyst in a tuneable manner, the presence of compressed CO₂ greatly facilitates mass transfer and gives easy access to continuous processes.

Keywords: carbon dioxide; enantioselectivity; homogeneous catalysis; ionic liquids; supercritical fluids.