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Activation, Tuning, and Immobilization of Homogeneous Catalysts in an Ionic Liquid/Compressed CO 2 Continuous‐Flow System
Author(s) -
Bösmann Andreas,
Franciò Giancarlo,
Janssen Edo,
Solinas Maurizio,
Leitner Walter,
Wasserscheid Peter
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010716)40:14<2697::aid-anie2697>3.0.co;2-w
Subject(s) - homogeneous , ionic liquid , catalysis , flow (mathematics) , materials science , chemical engineering , continuous flow , ionic bonding , chemistry , mechanics , thermodynamics , organic chemistry , engineering , physics , ion
A new immobilization scheme for enantioselective catalysts was developed by using a combination of ionic liquids and compressed CO 2 . 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 CO 2 greatly facilitates mass transfer and gives easy access to continuous processes (see the schematic representation).