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Synthesis of ω-phosphonated poly(ethylene oxide)s through the combination of kabachnik–fields reaction and “click” chemistry

Authors

  • Thi Thanh Thuy N'Guyen,

    1. LUNAM Université, Institut des Molécules et Matériaux du Mans, Equipe Méthodologie et Synthèse des Polymères, UMR CNRS 6283, Université du Maine, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
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  • Karima Oussadi,

    1. LUNAM Université, Institut des Molécules et Matériaux du Mans, Equipe Méthodologie et Synthèse des Polymères, UMR CNRS 6283, Université du Maine, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
    2. Université des Sciences et de Technologie Mohamed Boudiaf, BP 1505, Oran El M'Naouar 31000, Algeria
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  • Véronique Montembault,

    1. LUNAM Université, Institut des Molécules et Matériaux du Mans, Equipe Méthodologie et Synthèse des Polymères, UMR CNRS 6283, Université du Maine, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
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  • Laurent Fontaine

    Corresponding author
    1. LUNAM Université, Institut des Molécules et Matériaux du Mans, Equipe Méthodologie et Synthèse des Polymères, UMR CNRS 6283, Université du Maine, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
    • LUNAM Université, Institut des Molécules et Matériaux du Mans, Equipe Méthodologie et Synthèse des Polymères, UMR CNRS 6283, Université du Maine, Avenue O. Messiaen, 72085 Le Mans Cedex 9, France
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Abstract

The synthesis of new ω-phosphonic acid-terminated poly(ethylene oxide) (PEOs) monomethyl ethers was investigated by the combination of Atherton–Todd or Kabachnik–Fields reactions and the “click” copper-catalyzed 1,3-dipolar cycloaddition of azides and terminal alkynes. The Atherton–Todd route fails to give the corresponding phosphonic acid-terminated PEOs due to competitive cleavage of the P[BOND]N bond during the dealkylation step. In contrast, the Kabachnik–Fields route leads with very good yields to ω-phosphonic acid-PEO through “click” reaction of azido-PEO onto dimethyl aminopropargyl phosphonate prepared by Kabachnik–Fields reaction between propargylbenzylimine and dimethyl phosphonate, followed by acidic hydrolysis. The reported methodology, precluding the use of anionic polymerization of ethylene oxide, leads to novel well-defined phosphonic acid-terminated PEOs from commercially available products in good yields. Moreover, such a strategy can be adapted to anchor phosphonic acid functionality onto a wide range of polymers. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013

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