In our recent paper we already showed how easy the reductions proceed in the ispropanol/water (9:1) solution and we reduced several keto groups to the enantiomerically pure (R) or (S) alcohol groups. In this paper we were interested in how selective behave the catalysts with aromatic keto and aldehyde groups. First we studied a competition reaction between acetophenone 1 and benzaldehyde 3. A 1:1 mixture of acetophenone 1 and benzaldehyde 3 ( 0.1M each) were reduced with Chiralidon ® -R and Chiralidon ® -S to the alcohols R-2 or S-2 and 4. The reactions were monitored by GC.