Secondary Phosphine Oxide Grafted on an Inherently Chiral Calixarene: Synthesis, Resolution, Characterizations, and Catalytic Activity

A secondary phosphine oxide (SPO) unit has been grafted on an inherently chiral calixarene, providing four stereoisomers that were separated by chiral HPLC. These low-symmetry ligands were then used in the palladium-catalyzed isomerization reaction of allylic alcohols. A strong confinement effect was observed: No product or ee was observed with the model SPO cavity-lacking ligand, whereas the calixarene-based SPO provided both catalytic activity and asymmetric induction.

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Publication Details

Journal
The Journal of Organic Chemistry
Published
2025-12-02
DOI
https://doi.org/10.1021/acs.joc.5c02171
Primary Topic
Supramolecular Chemistry and Complexes
Type
article
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article

Secondary Phosphine Oxide Grafted on an Inherently Chiral Calixarene: Synthesis, Resolution, Characterizations, and Catalytic Activity

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Secondary Phosphine Oxide Grafted on an Inherently Chiral Calixarene: Synthesis, Resolution, Characterizations, and Catalytic Activity

Alexandre Martinez, Sara Chentouf, Didier Nuel, Gaëtan Herbette, Jean‐Valère Naubron, Romain Membrat, Pavel Lhoták, Anne‐Doriane Manick, Lucien Lavaud, Martin Tlustý, Laurent Giordano
article en

Abstract

A secondary phosphine oxide (SPO) unit has been grafted on an inherently chiral calixarene, providing four stereoisomers that were separated by chiral HPLC. These low-symmetry ligands were then used in the palladium-catalyzed isomerization reaction of allylic alcohols. A strong confinement effect was observed: No product or ee was observed with the model SPO cavity-lacking ligand, whereas the calixarene-based SPO provided both catalytic activity and asymmetric induction.

The Journal of Organic ChemistryVol. 90(49)
Centre National de la Recherche Scientifique (FR), Institut de Chimie des Substances Naturelles (FR), Aix-Marseille Université (FR), Université Paris-Saclay (FR), Centrale Méditerranée (FR), University of Chemistry and Technology, Prague (CZ)
Openalex Percentile: Top 71%
Supramolecular Chemistry and Complexes
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