As these ligands were found to be efficient catalysts in Zn(II)-
mediated aldol reactions of acetone, we decided to extend our
research using hydroxyacetone as the carbonyl component
(Table 3). As the catalyst we used 5 mol % of compound 2c and
5 mol % of Zn(OTf)2 in a mixture of hydroxyacetone/water
(2.9:0.1). All experiments were performed at room temperature