催化学报

催化学报 ›› 2015, Vol. 36 ›› Issue (3): 299-307.DOI: 10.1016/S1872-2067(14)60265-5

• 论文 • 上一篇    下一篇

Preyssler heteropolyacid supported on silica coated NiFe2O4 nanoparticles for the catalytic synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones

Hossein Eshghia, Ali Javidb, Amir Khojastehnezhada, Farid Moeinpourc, Fatemeh F. Bamoharramd, Mehdi Bakavolia, Masoud Mirzaeia   

  1. a Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran;
    b Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran;
    c Department of Chemistry, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, 7915893144, Iran;
    d Department of Chemistry, College of Science, Mashhad Branch, Islamic Azad University, Mashhad, Iran;
  • 收稿日期:2014-10-19 修回日期:2014-12-12 出版日期:2015-02-14 发布日期:2015-02-14
  • 通讯作者: Ali Javid, Amir Khojastehnezhad

Preyssler heteropolyacid supported on silica coated NiFe2O4 nanoparticles for the catalytic synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones

Hossein Eshghia, Ali Javidb, Amir Khojastehnezhada, Farid Moeinpourc, Fatemeh F. Bamoharram dd, Mehdi Bakavolia, Masoud Mirzaeia   

  1. a Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran;
    b Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran;
    c Department of Chemistry, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, 7915893144, Iran;
    d Department of Chemistry, College of Science, Mashhad Branch, Islamic Azad University, Mashhad, Iran
  • Received:2014-10-19 Revised:2014-12-12 Online:2015-02-14 Published:2015-02-14

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摘要：

A novel magnetic acidic catalyst comprising Preyssler (H14[NaP5W30O110]) heteropoly acid supported on silica coated nickel ferrite nanoparticles (NiFe2O4@SiO2) was prepared. The catalyst was characterized by Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy dispersive spectrum, VSM and particle size neasurement. Its catalytic activity was investigated for the synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones derivatives by the Biginelli reaction. With the catalyst, the reactions occurred in less than 1 h with good to excel-lent yields. More importantly, the catalyst was easily separated from the reaction mixture by an external magnet and reused at least five times without degradation in the activity.

关键词: Preyssler, Nickel ferrite nanoparticles, Magnetically green catalyst, Bis(dihydropyrimidinone)benzene, 3,4-Dihydropyrimidin-2(1H)-ones

Abstract:

A novel magnetic acidic catalyst comprising Preyssler (H14[NaP5W30O110]) heteropoly acid supported on silica coated nickel ferrite nanoparticles (NiFe2O4@SiO2) was prepared. The catalyst was characterized by Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy dispersive spectrum, VSM and particle size neasurement. Its catalytic activity was investigated for the synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones derivatives by the Biginelli reaction. With the catalyst, the reactions occurred in less than 1 h with good to excel-lent yields. More importantly, the catalyst was easily separated from the reaction mixture by an external magnet and reused at least five times without degradation in the activity.

Key words: Preyssler, Nickel ferrite nanoparticles, Magnetically green catalyst, Bis(dihydropyrimidinone)benzene, 3,4-Dihydropyrimidin-2(1H)-ones