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Acidic ionic liquid polymers: poly(bis-imidazolium-p-phenylenesulfonic acid) and applications as catalysts in the preparation of 1-amidoalkyl-2-naphthols

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Abstract

A new class of polymeric acidic ionic liquids with imidazolium hydrogen sulfate and p-phenylene sulfonic acid units built into the main polymer chain were prepared by a simple two step method in 87–89% yield. These new polymers were characterized by elemental analysis, 1H, 13C NMR, FT-IR, TGA and GPC. The catalytic activity of sulfonic acid group functionalized ionic liquid polymers was demonstrated through the synthesis of 1-amidoalkyl-2-naphthols in 78–90% yield by condensation of 2-naphthol, benzaldehyde and amides without a solvent at 100 °C.

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Acknowledgements

We thank National Science Foundation grants CBET-0929970, CBET-1336469, HRD-1036593, and United States Department of Agriculture grant CBG-2010-38821-21569 for financial support.

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Authors and Affiliations

  1. Department of Chemistry, Prairie View A&M University, Prairie View, TX, 77446, USA

    Ananda S. Amarasekara, Jennifer Nguyen & Ashfaqur Razzaq

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  1. Ananda S. Amarasekara
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  2. Jennifer Nguyen
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  3. Ashfaqur Razzaq
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Correspondence to Ananda S. Amarasekara.

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Amarasekara, A.S., Nguyen, J. & Razzaq, A. Acidic ionic liquid polymers: poly(bis-imidazolium-p-phenylenesulfonic acid) and applications as catalysts in the preparation of 1-amidoalkyl-2-naphthols. J Polym Res 24, 52 (2017). https://doi.org/10.1007/s10965-017-1216-5

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