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Mesoporous polymeric catalysts with both sulfonic acid and basic amine groups for the one-pot deacetalization−Knoevenagel reaction

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Abstract

A one-pot cascade reaction catalyzed by multifunctional catalysts is an economical and efficient pathway in modern organic synthesis. Herein, mesoporous polymeric materials with both sulfonic acid and basic amine groups have been synthesized by solvothermal-copolymerization of divinylbenzene (DVB) and 4-styrenesulfonic sodium (StSO3Na+) with subsequent nitration, reduction of nitro to amino groups and acidification of sulfonic sodium to obtain P(DVB–NH2–StSO3H). The mesoporous polymeric bifunctional catalyst showed excellent activity and selectivity for one-pot cascade deacetalization−Knoevenagel condensation with facile recovery due to the isolated locations of the sulfonic acid and amino groups.

Graphical abstract: Mesoporous polymeric catalysts with both sulfonic acid and basic amine groups for the one-pot deacetalization−Knoevenagel reaction

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Publication details

The article was received on 04 Aug 2019, accepted on 25 Sep 2019 and first published on 27 Sep 2019


Article type: Paper
DOI: 10.1039/C9NJ04050A
New J. Chem., 2019, Advance Article

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    Mesoporous polymeric catalysts with both sulfonic acid and basic amine groups for the one-pot deacetalization−Knoevenagel reaction

    Z. Sun, X. Yang, X. Huang, M. Zhang, G. Bian, Y. Qi, X. Yang and W. Zhang, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ04050A

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