Organic-inorganic hybrid polyoxometalates: Efficient, heterogeneous and reusable catalysts for solvent-free synthesis of azlactones

被引:42
|
作者
Rostami, Mahbubeh [1 ]
Khosropour, Ahmadreza [1 ]
Mirkhani, Valiollah [1 ]
Moghadam, Majid [1 ]
Tangestaninejad, Shahram [1 ]
Mohammadpoor-Baltork, Iraj [1 ]
机构
[1] Univ Isfahan, Catalysis Div, Dept Chem, Esfahan 8174673441, Iran
关键词
Hybrid polyoxometalate; Heterogeneous catalysts; Azlactone; Solvent-free; IONIC LIQUID; 12-PHOSPHOTUNGSTIC ACID; 4-ARYLIDENE-2-PHENYL-5(4H)-OXAZOLONES; ACETATE; ANION; SALT;
D O I
10.1016/j.apcata.2011.02.004
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Two organic-inorganic hybrid polyoxometalates, consist of 1-butyl-3-methylimidazolium salts of (W10O32)(4-) and (RW12O40)(3-) polyanions were prepared and characterized by thermal analysis, X-ray diffraction, FT-IR, diffuse reflectance UV-Vis spectroscopic methods and nitrogen absorption-desorption determination (BET). These heterogeneous catalysts were used for synthesis of azlactones by the reaction of aldehydes with hippuric acid and acetic anhydride under solvent-free conditions. These catalysts were reused several times without loss of their activities. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:27 / 34
页数:8
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