We hypothesized that pure alcohol solvents may disrupt noncovalent interactions between substrate and thiol catalysts, prompting us to explore solvent mixtures that contained nonpolar co-solvents (Table , entries 6-9). These changes enabled us to observe unambiguous enantioinduction for the first time (61:39 er), with the highest er obtained in 95:5 dioxane:EtOH mixture (Table , entry 8).