Synthesis of New Polyphosphonic Acids

Carine Viornery Department of Chemistry, Laboratory for Photonics and Interfaces, Swiss Federal Institute of Technology--Lausanne, Lausanne, Switzerland

Péter Péchy Department of Chemistry, Laboratory for Photonics and Interfaces, Swiss Federal Institute of Technology--Lausanne, Lausanne, Switzerland

Mickaël Boegli Department of Chemistry, Laboratory for Photonics and Interfaces, Swiss Federal Institute of Technology--Lausanne, Lausanne, Switzerland

Björn-O. Aronsson Group of Applied Physics, University of Geneva, Biomedical, Geneva, Switzerland

Pierre Descouts Group of Applied Physics, University of Geneva, Biomedical, Geneva, Switzerland

Michael Grätzel Department of Chemistry, Laboratory for Photonics and Interfaces, Swiss Federal Institute of Technology--Lausanne, Lausanne, Switzerland

Abstract

A general method for the synthesis of new polyphosphonic acids is described. The hexaisopropyl alkane-1,1,n-triphosphonates (n = 4-5) are formed by the reaction of the salt of tetraisopropyl methylenediphosphonate with diisopropyl n-bromoalkanephosphonates (n = 3-4) while the hexaisopropyl alkane-2,2,n-triphosphonates (n = 5-6) are formed by the reaction of the salt of tetraisopropyl ethane-1,1-diphosphonate with diisopropyl n-bromoalkanephosphonates (n = 3-4). The esters are then hydrolyzed with HCl to give the corresponding phosphonic acids.

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Synthesis of New Polyphosphonic Acids

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Synthesis of New Polyphosphonic Acids

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