Straightforward Access to Chiral Phosphangulene Derivatives
Emile Vandeputte1, Elise Antonetti1, Paola Nava1
1Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France.
The Journal of Organic Chemistry
|April 3, 2024
Summary
Researchers developed a simple, three-step synthesis for chiral phosphangulene oxides, overcoming previous preparation challenges. This breakthrough enables wider applications of these P-containing polycyclic aromatic hydrocarbons in supramolecular chemistry and materials science.
Area of Science:
- Organic Chemistry
- Supramolecular Chemistry
- Material Science
Background:
- Polycyclic aromatic hydrocarbons (PAHs) with heteroatoms are crucial in supramolecular chemistry and material science.
- Phosphangulene derivatives, P-containing PAHs with concave surfaces, are ideal for supramolecular receptors.
- Previous synthesis of phosphangulenes was complex, multistep, and involved hazardous reagents, limiting their application.
Purpose of the Study:
- To develop a straightforward, protecting-group-free synthesis for chiral phosphangulene oxide derivatives.
- To enable the scalable production of phosphangulene building blocks.
- To explore the potential of these compounds in creating novel supramolecular structures and materials.
Main Methods:
- A three-step synthesis utilizing a triple phospho-Fries rearrangement.
- Protecting-group-free methodology.
- Chiral High-Performance Liquid Chromatography (HPLC) for resolution.
- Further functionalization of the resolved compound.
Main Results:
- A hundred-milligram-scale synthesis of a chiral phosphangulene oxide derivative was achieved.
- The compound was successfully resolved using chiral HPLC.
- Versatile chiral phosphangulene derivatives were synthesized through functionalization.
- Chiral phosphangulene oxides with low symmetry were obtained.
- Solid-state molecular structures revealed diverse packing arrangements.
Conclusions:
- The developed synthesis provides an accessible route to chiral phosphangulene oxides.
- This methodology overcomes previous synthetic limitations, paving the way for broader utilization.
- Chiral phosphangulenes are promising building blocks for advanced supramolecular architectures and novel materials.
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