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      Magnetic nanoparticles coated by acidic functionalized poly(amidoamine) dendrimer: Effective acidic organocatalyst

      , Article Catalysis Communications ; Volume 28 , 2012 , Pages 86-89 ; 15667367 (ISSN) Pourjavadi, A ; Hosseini, S. H ; Hosseini, S. T ; Aghayeemeibody, S. A ; Sharif University of Technology
      2012
      Abstract
      A novel magnetic Br∅nsted acid catalyst was synthesized based on growing poly(amidoamine) dendrimers on the surface of magnetic nanoparticles. After the dendronizing process, the MNP coated PAMAM was functionalized by chlorosulfuric acid to form an acid catalyst. Because of dendrimer coating of MNPs, catalyst shows good loading level of acidic groups on the surface. Also zwitterion nature of catalyst surface improves the catalytic activity. This new catalyst is proven to be highly effective in the synthesis of α-aminophosphonate compounds in a green way  
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