Mutual optical resolution of 2,2′-dihydroxy-1,1′-binaphthyl and alkyl aryl or dialkyl sulfoxides by complex formation

Abstract

By complexation with optically active 2, 2′-dihydroxy-1, 1′-binaphthyl, alkyl aryl and dialkyl sulfoxides were resolved very efficiently. Reversely, by complexation with optically active alkyl aryl or dialkyl sulfoxides, 2, 2′- dihydoxy-l,l′-binaphthyl was resolved very efficiently, In all cases, 100% optically pure (+)- and (−)-enantiomers were obtained in good yields.