What question did this study set out to answer?

To develop a direct, metal-free method for inserting phosphorus atoms into π-frameworks.

February 19, 2026Open Access

A direct method for phosphorus atom insertion via phosphorous acid for synthesizing P-doped curved polycyclic π-systems

THTomohiro HigashinoKyoto University YNY. NishidaKyoto University KIKeiichi IshidaKyoto University

Key Points

To develop a direct, metal-free method for inserting phosphorus atoms into π-frameworks.
Utilized phosphorous acid (H3PO3) for phosphorus atom insertion.
Focused on a metal-free approach to synthesis.
Employed straightforward synthetic techniques to create P-doped materials.
Successfully synthesized P-doped curved polycyclic π-systems.
Demonstrated the effectiveness of using phosphorous acid in the insertion process.

Abstract

A metal-free and direct method for the insertion of phosphorus atoms into π-frameworks using H 3 PO 3 has been developed, providing a simple and straightforward approach to synthesize P-doped curved polycyclic π-systems.

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