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A Remarkable Titanium‐Catalyzed Asymmetric Strecker Reaction using Hydrogen Cyanide at Room Temperature
Authors:Balamurugan Ramalingam  Abdul Majeed Seayad  Li Chuanzhao  Marc Garland  Kazuhiko Yoshinaga  Manabu Wadamoto  Takushi Nagata  Christina L L Chai
Abstract:Close to perfect enantioselectivity (up to 98% ee) is obtained for the formation of amino nitriles using hydrogen cyanide (HCN) as the cyanide source at room temperature for the first time. In an operationally simple process, the catalyst generated from a partially hydrolyzed titanium alkoxide (PHTA) and (S)‐N‐salicyl‐β‐amino alcohol ligand, catalyzes the cyanation of imines in a short reaction time.
Keywords:enantioselective cyanation  hydrogen cyanide  imines  in‐situ IR studies  Strecker reaction  titanium catalyst
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