催化学报 ›› 2014, Vol. 35 ›› Issue (12): 1982-1989.DOI: 10.1016/S1872-2067(14)60185-6

• 论文 • 上一篇    下一篇

Acetylation of alcohols and phenols under solvent-free conditions using copper zirconium phosphate

Abdol R. Hajipoura,b, Hirbod Karimia,c   

  1. a. Pharmaceutical Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran;
    b. Department of Neuroscience, University of Wisconsin, Medical School, Madison, WI 53706-1532, USA;
    c. Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Isfahan, Iran
  • 收稿日期:2014-05-18 修回日期:2014-07-01 出版日期:2014-11-29 发布日期:2014-11-29
  • 通讯作者: Abdol R. Hajipour
  • 基金资助:

    This work was supported by the Isfahan University of Technology(IUT), Iran.

Acetylation of alcohols and phenols under solvent-free conditions using copper zirconium phosphate

Abdol R. Hajipoura,b, Hirbod Karimia,c   

  1. a. Pharmaceutical Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran;
    b. Department of Neuroscience, University of Wisconsin, Medical School, Madison, WI 53706-1532, USA;
    c. Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Isfahan, Iran
  • Received:2014-05-18 Revised:2014-07-01 Online:2014-11-29 Published:2014-11-29
  • Supported by:

    This work was supported by the Isfahan University of Technology(IUT), Iran.

摘要:

Copper zirconium phosphate nanoparticles have been used as an efficient catalyst for the acetylation of a wide range of alcohols and phenols with acetic anhydride in good to excellent yields under solvent-free conditions. The steric and electronic properties of the different substrates had a significant influence on the reaction conditions required to achieve the acetylation. The catalyst used in the current study was characterized by inductively-coupled plasma optical emission spectroscopy, energy dispersive spectroscopy, X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy, and transmission electron microscopy. These analyses revealed that the interlayer distance in the catalyst increased from 7.5 to 8.0 Å when Cu2+ was intercalated between the layers, whereas the crystallinity of the material was reduced. This nanocatalyst could also be recovered and reused at least six times without any discernible decrease in its catalytic activity. This new method for the acetylation of alcohols and phenols has several key advantages, including mild and environmentally friendly reaction conditions, as well as good to excellent yields and a facile work-up.

关键词: Copper zirconium phosphate, Nanoparticles, Acylation, Heterogeneous catalysis, Solvent-free

Abstract:

Copper zirconium phosphate nanoparticles have been used as an efficient catalyst for the acetylation of a wide range of alcohols and phenols with acetic anhydride in good to excellent yields under solvent-free conditions. The steric and electronic properties of the different substrates had a significant influence on the reaction conditions required to achieve the acetylation. The catalyst used in the current study was characterized by inductively-coupled plasma optical emission spectroscopy, energy dispersive spectroscopy, X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy, and transmission electron microscopy. These analyses revealed that the interlayer distance in the catalyst increased from 7.5 to 8.0 Å when Cu2+ was intercalated between the layers, whereas the crystallinity of the material was reduced. This nanocatalyst could also be recovered and reused at least six times without any discernible decrease in its catalytic activity. This new method for the acetylation of alcohols and phenols has several key advantages, including mild and environmentally friendly reaction conditions, as well as good to excellent yields and a facile work-up.

Key words: Copper zirconium phosphate, Nanoparticles, Acylation, Heterogeneous catalysis, Solvent-free