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Chiral octahedral complexes of Co(iii) as catalysts for asymmetric epoxidation of chalcones under phase transfer conditions?

RSC Advances Pub Date: 2015-08-21 DOI: 10.1039/C5RA11760G

Abstract

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%).

Graphical abstract: Chiral octahedral complexes of Co(iii) as catalysts for asymmetric epoxidation of chalcones under phase transfer conditions

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