Catalytic Asymmetric Synthesis. Группа авторов

Catalytic Asymmetric Synthesis - Группа авторов


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the first example of highly enantioselective synthesis of chiral barbituric acid derivatives with an in‐ring tetrasubstituted stereogenic center.

Schematic illustration of enantioselective Michael addition of barbituric acid derivatives 14 to enones catalyzed by 2n.

      Source: Based on [36].

      3.2.2. Carbon‐Heteroatom Bond Formations

Schematic illustration of enantioselective cycloetherification via oxa-Michael addition catalyzed by 2h.

      Source: Based on [37].

      Source: Based on [38].

Schematic illustration of enantioselective synthesis of tetrahydropyrans with two stereogenic centers. Schematic illustration of enantioselective intramolecular oxa-Michael addition of in situ generated 4-hydroxy cyclohexadienone via dearomatization of phenol catalyzed by 2q. Schematic illustration of enantioselective intramolecular aza-Michael addition of enamines catalyzed by 2r.

      Source: Based on [43].


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