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Advanced Synthesis & Catalysis
Article . 2019 . Peer-reviewed
License: Wiley Online Library User Agreement
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Conformational Control of Tetrahydropyran‐Based Hybrid Dipeptide Catalysts Improves Activity and Stereoselectivity

Authors: Borges-González, J; García-Monzón, I; Martín, T;

Conformational Control of Tetrahydropyran‐Based Hybrid Dipeptide Catalysts Improves Activity and Stereoselectivity

Abstract

AbstractHerein, we introduce and demonstrate how carbohydrates can be used as conformational control units of organocatalysts to tune their catalytic properties. New hybrid dipeptide‐like organocatalysts based on ζ‐sugar aminoacids and proline were prepared and tested for the asymmetric Michael addition of aldehydes to β‐nitrostyrenes. Taking full advantage of the modular nature of the carbohydrate motif, both reactivity and stereoselectivity were significantly improved. By simple structural changes, such as the elimination of the methoxy group in the C4 position of the tetrahydropyran ring, we obtained two complementary catalysts that allow access to both enantiomers of the γ‐nitroaldehydes with excellent yields, diastereoselectivity, and enantiomeric excesses between 97 and 99%, using a catalytic load even below 1 mol%.magnified image

Country
United Kingdom
Keywords

Noncovalent interactions, Organocatalysis, Michael addition, Asymmetric catalysis, Peptides

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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12
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