4.8 Article

Diastereoselective Control of Intramolecular Aza-Michael Reactions Using Achiral Catalysts

Journal

ORGANIC LETTERS
Volume 13, Issue 20, Pages 5556-5559

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol202276h

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Funding

  1. NIGMS Centers of Excellence for Chemical Methodology and Library Development [P50 GM069721]

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An intramolecular aza-Michael reaction with a Cbz carbamate and an enone is reported to result in 3,5-disubstituted nitrogen-containing heterocycles. Either cis or trans isomers were obtained selectively using chiral substrates and an achiral Pd (II) complex or strong Bronsted acid catalysis. A range of substrates undergoes these selective transformations. Functionalization of the resulting products yielding bicyclic heterocycles is also demonstrated.

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