PREPARATION OF OPTICALLY PURE DINUCLEAR COBALT(III) COMPLEX WITH Λ-CONFIGURATION AS A DIANIONIC CHIRAL CATALYST

The disodium salt of enantiomerically pure dimeric.-cobalt(III) complex 1 was prepared in one-pot from sodium triscarbonatocobaltate(III) and Schiff base ligand (R-a,S,S)-2 formed by the condensation of (R)-3,3'-diformyl-2,2'-dihydroxy-1,1'-binaphthyl 3 with (S)-tert-leucine 4. Preliminary screening of 1 as a chiral catalyst was conducted for the bromocyclization of a tryptamine derivative.

Automated summary

In this study, the disodium salt of enantiomerically pure dimeric.-cobalt(III) complex 1 was prepared and screened as a chiral catalyst for the bromocyclization of a tryptamine derivative.