One-pot synthesis of 2,4,5-tri-substituted and 1,2,4,5-tetra-substituted imidazoles catalyzed by poly(4-vinylpyridinium tribromide) (PVPBr3) or citric acid

被引:14
|
作者
Ghorbani-Choghamarani, Arash [1 ]
Shiri, Lotfi [1 ]
Azadi, Gouhar [1 ]
Pourbahar, Nasrin [1 ]
机构
[1] Ilam Univ, Dept Chem, Fac Sci, Ilam, Iran
关键词
Poly(4-vinylpyridinium tribromide); Citric acid; Benzil; Ammonium acetate; Aromatic aldehydes; TETRASUBSTITUTED IMIDAZOLES; IONIC LIQUID; 1,2,4,5-TETRASUBSTITUTED IMIDAZOLES; 2,4,5-TRISUBSTITUTED IMIDAZOLES; REUSABLE CATALYST; HIGHLY-EFFICIENT;
D O I
10.1007/s11164-014-1583-z
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An efficient, one-pot method for preparation of tri and tetra-substituted imidazoles by condensation of benzil, aldehydes, and ammonium acetate or primary amine in the presence of a catalytic amount of citric acid or poly(4-vinylpyridinium tribromide) (P.V.P.Br-3) under solvent-free conditions is reported. The remarkable advantages of this method are the inexpensive green catalyst, mild reaction conditions, simple procedures, and excellent yields of products. .
引用
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页码:4997 / 5005
页数:9
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