American Journal of Heterocyclic Chemistry

Volume 1, Issue 2, June 2015

  • Catalytical Synthesis of Dicoumarols Using Silica-Supported Preyssler Nanoparticles (SPN), H14[NaP5W30O110]/SiO2

    Ali Gharib, Nader Noroozi Pesyan, Leila Vojdani Fard, Mina Roshani

    Issue: Volume 1, Issue 2, June 2015
    Pages: 21-28
    Received: May 20, 2015
    Accepted: May 29, 2015
    Published: May 30, 2015
    DOI: 10.11648/j.ajhc.20150102.11
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    Abstract: A new and efficient method for the synthesis of dicoumarol (3,3'-methylene-bis-4-hydroxycoumarin) in the presence of catalytic amounts of silica-supported Preyssler nanoparticles (SPN) is reported. The catalyst performs very well in comparison with other heteropolyacids catalysts. An important advantage of this catalyst is the ease of separating it... Show More
  • One-Pot Synthesis of β-acetamido Ketones Using Silica-Supported Preyssler Nanoparticles (SPNPs) as Green and Reusable Catalyst

    Ali Gharib, Nader Noroozi Pesyan, Leila Vojdani Fard, Mina Roshani

    Issue: Volume 1, Issue 2, June 2015
    Pages: 29-34
    Received: Jun. 26, 2015
    Accepted: Jul. 03, 2015
    Published: Jul. 06, 2015
    DOI: 10.11648/j.ajhc.20150102.12
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    Abstract: We describe an efficient method for the synthesis of β-acetamido ketones through the condensation of an aryl (aromatic) aldehyde, an acetophenone, acetyl chloride, and acetonitrile in the presence of silica-supported Preyssler nanoparticles (SPNPs) at room temperature. High efficiency, easy availability and reusability are some advantages of silica... Show More