Ruthenium-benzocrownether complexes: Synthesis, structures, catalysis and immobilisation in ionic liquids


A facile pathway to [RuCl2(η6-benzocrownether)]2 complexes is described and crystal structures of the complexes [RuCl2(η6-benzo-15-crown-5)]2 and [RuCl2(η6-dibenzo-18-crown-6)]2 are reported. The complexes were derivatised with (1S,2R)-2-amino-1,2-diphenylethanol and evaluated in the enantioselective transfer-hydrogenation of acetophenone. The effect of complexation of different alkaline metals (Na, K, Cs) within the crown on the selectivity and reaction rate was studied. Interaction of a sulfonated phosphine ligand with the crown was probed by NOESY-NNIR and utilisation of the crownether to serve as an anchor for catalyst immobilisation was investigated

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Infoscience - École polytechnique fédérale de Lausanne

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oai:infoscience.tind.io:76833Last time updated on 2/9/2018

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