无溶剂条件下铜磷酸锆催化醇类和酚类化合物乙酰化(英文)  

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

作　　者：Abdol R. Hajipour Hirbod Karimi 

机构地区：[1]Pharmaceutical Research Laboratory, Department of Chemistry, lsfahan University of Technology, lsfahan 84156, lran [2]Department of Neuroscience, University of Wisconsin, Medical School Madison, W153706-1532, USA [3]Young Researchers and Elite Club, Shahreza Branch, lslamic Azad University, lsfahan, lran

出　　处：《催化学报》2014年第12期1982-1989,共8页

基　　金：the Isfahan University of Technology，Iran

摘　　要：Copper zirconium phosphate nanoparticles have been used as an efficient catalyst for the acetyla-tion 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 signif-icant 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 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.Copper zirconium phosphate nanoparticles have been used as an efficient catalyst for the acetyla‐tion 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 signif‐icant 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 A when Cu^2＋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：无溶剂条件 乙酰化 磷酸铜 泛醇 等离子体发射光谱法 高效催化剂 透射电子显微镜 扫描电子显微镜 

分 类 号：TQ244.2[化学工程—有机化工] TQ246.38