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Direct Catalytic Asymmetric Mannich-Type Reaction of α‑Sulfanyl Lactones

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journal contribution
posted on 19.02.2016, 06:56 by Sho Takechi, Naoya Kumagai, Masakatsu Shibasaki
Catalytic asymmetric Mannich-type reactions of α-sulfanyl lactones to aldimines were promoted by a chiral Ag complex/DBU binary catalyst. The reaction proceeded in a syn-selective manner in high enantioselectivity. Alkylative activation of the sulfide of the Mannich adduct allowed for the formation of trisubstituted aziridines.