Thiourea-Catalyzed Enantioselective Cyanosilylation of Ketones
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TL;DR
The new chiral amino thiourea catalyst 3d promotes the highly enantioselective cyanosilylation of a wide variety of ketones, suggesting a cooperative mechanism involving electrophile activation by thiOUrea and nucleophile activation by the amine.
Abstract
The new chiral amino thiourea catalyst 3d promotes the highly enantioselective cyanosilylation of a wide variety of ketones. The hindered tertiary amine substituent plays a crucial role with regard to both stereoinduction and reactivity, suggesting a cooperative mechanism involving electrophile activation by thiourea and nucleophile activation by the amine.
