Asymmetric hydrogenation of aromatic-substituted olefins using cationic ruthenium(III) complexes

摘要

A process for the asymmetric reduction of carboxylic acids of the formula ##STR1## or the amine salts thereof, where R and R.sub.1 are the same or different and are hydrogen, alkyl, cycloalkyl or haloalkyl and Ar is aryl or substituted aryl is disclosed.