Current Topics in the Asymmetric Transfer Hydrogenation of Imines
a Department of Organic Technology, University of Chemistry and Technology, Prague, b Laboratory of Molecular Structure Characterization, Institute of Microbiology, Academy of Sciences of the Czech Republic
Keywords: asymmetric transfer hydrogenation, ruthenium, isoquinoline, enantioselective catalysis
At present, asymmetric hydrogenation is an attractive method for the synthesis of enantioenriched chiral compounds, such as drugs, agrochemicals or fragrances. This review is focused on the asymmetric transfer hydrogenation (ATH) of imines, in particular 3,4-dihydro¬isoquinolines. Mechanistic aspects of ATH are discussed and analytical methods for the monitoring of ATH as developed in our group are presented. The effect of structural changes of the catalyst and substrate on the course of ATH is also described. The influence of tempe¬rature, reactant concentrations and other reaction parameters as well as the utilizability of ATH in chemical industry are discussed.
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