Enantioselective Brønsted Acid Catalyzed Transfer Hydrogenation:  Organocatalytic Reduction of Imines

The first enantioselective Brønsted acid catalyzed reduction of imines has been developed. This new organocatalytic transfer hydrogenation of ketimines with Hantzsch dihydropyridine as the hydrogen source offers a mild method to various chiral amines with high enantioselectivity. The stereochemistry...

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Bibliographic Details
Published in:Organic letters 2005-08, Vol.7 (17), p.3781-3783
Main Authors: Rueping, Magnus, Sugiono, Erli, Azap, Cengiz, Theissmann, Thomas, Bolte, Michael
Format: Article
Language:English
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Summary:The first enantioselective Brønsted acid catalyzed reduction of imines has been developed. This new organocatalytic transfer hydrogenation of ketimines with Hantzsch dihydropyridine as the hydrogen source offers a mild method to various chiral amines with high enantioselectivity. The stereochemistry of the chiral amines can be rationalized by a stereochemical model derived from an X-ray crystal structure of a chiral BINOL phosphate catalyst.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol0515964