Abstract

Our recent studies on asymmetric synthesis using chiral organochalcogen (S, Se, Te) compounds are presented. A variety of chiral diferrocenyl dichalcogenides have been newly prepared, some of which being employed as reagents for new asymmetric reactions such as selenoxide elimination, [2,3]sigmatropic rearrangement of chiral selenoxides, selenimides and tellurimides, and intramolecular selenenylation of alkenes. These dichalcogenides, as well as several newly prepared chiral ferrocenyl monochalcogenides, also act as chiral ligands in the rhodium- and iridium-catalyzed asymmetric hydrosilylation and transfer hydrogenation of ketones.

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