Stereochemically inert and positively charged chiral complexes of Co(III) were shown to catalyze the asymmetric epoxidation of chalcones with H₂O₂ under phase transfer conditions. The reaction products had enantiomeric purities of up to 55%. It was also shown that complex 1a I⁻ catalyzed the coupling reaction of a resulting epoxide with CO₂ (conversion 72%).