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Carbon Dioxide Induced Phase Switching for Homogeneous‐Catalyst Recycling
Author(s) -
Desset Simon. L.,
ColeHamilton David J.
Publication year - 2009
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/anie.200804729
Subject(s) - hydroformylation , rhodium , catalysis , phase (matter) , amidine , carbon dioxide , homogeneous , ton , chemistry , homogeneous catalysis , organic chemistry , inorganic chemistry , chemical engineering , thermodynamics , physics , fishery , biology , engineering
SwitchPhos : Rhodium complexes formed from PPh 3 ligands functionalized with weakly basic amidine groups are highly active catalysts for the hydroformylation of alkenes. On bubbling with CO 2 in the presence of water, the yellow rhodium complexes move into the water phase, whereas bubbling with N 2 at 60 °C causes them to switch back into the organic phase. The catalysts can be used for reactions in water or an organic phase.