ИСТИНА

Chiral metal-templated complexes have broadly applied as powerful catalysts for many asymmetric transformations [1]. Among them, the chiral-at-metal Co(III) complexes have a great potential [2,3]. For instance, our group introduced a novel class of chiral coordinatively saturated positively charged Co(III) complexes, featuring chirality centered both at metal and ligands (Figure) [2-7]. In those complexes the metal center activates the NH2 groups of the ligands, doing them hydrogen bond donors and serves, mainly, a structural role as a "scaffold" for the ligands, keeping them in space and providing a proper chiral environment. As a result, we demonstrated that the obtained complexes efficiently catalyze many asymmetric reactions such as asymmetric alkylation, Michael addition, epoxidation, trimethylsilylation and etc [2-7].