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  • Title: Enantioselective synthesis of substituted pyrans via amine-catalyzed Michael addition and subsequent enolization/cyclisation.
    Author: Das U, Huang CH, Lin W.
    Journal: Chem Commun (Camb); 2012 Jun 07; 48(45):5590-2. PubMed ID: 22531692.
    Abstract:
    An organocatalytic construction of optically enriched substituted pyran derivatives via amine-catalyzed Michael addition and subsequent enolization/cyclisation has been described starting from electronically poor alkenes. Functionalized pyrans were obtained in high enantioselectivities (up to 96%) and good yields (up to 90%) having three contiguous chiral centers.
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