The transfer hydrogenation (TH) catalyzed by ruthenium complexes is a cost-effective and environmentally benign way for the reduction of carbonyl compounds. On account of the reversibility of the TH process, ruthenium catalysts have attracted a great deal of interest for a number of C-H activation organic transformations. To improve the catalytic activity and to retard decomposition, the design of suitable chelating and non-innocent ligands appears crucial. We report here the preparation of pincer, carbonyl and acetate ruthenium complexes, displaying high productivity for the TH of carbonyl compounds, including flavanones and biomass-derived molecules (5-HMF, ethyl levulinate). The alkylation of amines with alcohols and the preliminary results on the photochemical TH of carbonyl compounds are also presented.
Pincer and Carbonyl Ruthenium Complexes for Transfer Hydrogenation Reactions
Maurizio BALLICO;Eleonora ANEGGI;Dario ALESSI;Rosario FIGLIOLIA;Walter BARATTA
2022-01-01
Abstract
The transfer hydrogenation (TH) catalyzed by ruthenium complexes is a cost-effective and environmentally benign way for the reduction of carbonyl compounds. On account of the reversibility of the TH process, ruthenium catalysts have attracted a great deal of interest for a number of C-H activation organic transformations. To improve the catalytic activity and to retard decomposition, the design of suitable chelating and non-innocent ligands appears crucial. We report here the preparation of pincer, carbonyl and acetate ruthenium complexes, displaying high productivity for the TH of carbonyl compounds, including flavanones and biomass-derived molecules (5-HMF, ethyl levulinate). The alkylation of amines with alcohols and the preliminary results on the photochemical TH of carbonyl compounds are also presented.File | Dimensione | Formato | |
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