Design of optically active selenium reagents having a chiral tertiary amino group and their application to asymmetric inter- and intramolecular oxyselenenylations
class of chiralselenium reagents 4–7 was synthesized on the basis of the concept that the strong intramolecular interaction between an electrophilic selenium and an optically modified tertiary amine (Se…N interaction) would induce asymmetric induction in the reaction between the selenium reagent and olefins. When 7, which showed the most powerful asymmetric induction, was applied to asymmetric methoxyselenenylation