Synthesis of 2-Substituted Benzimidazoles in the Presence of Polyaniline Nanoparticles Doped With 12-Tungstophosphoric Acid as Reusable Heterogeneous Catalyst

被引:5
|
作者
Abdollahi-Alibeik, Mohammad [1 ]
Moosavifard, Marzieh [1 ]
Poorirani, Safoora [1 ]
机构
[1] Yazd Univ, Dept Chem, Yazd 89195741, Iran
关键词
12-tungstophosphoric acid; benzimidazole; doped polymer; nanoparticles; o-phenylenediamine; polyaniline; CHEMOSELECTIVE DEHYDROGENATION; POTASSIUM-PERMANGANATE; EFFICIENT SYNTHESIS; 2-IMIDAZOLINES; BENZYLATION; MILD;
D O I
10.1080/15533174.2012.761233
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Polyaniline nanoparticles doped with 12-tungstophosphoric acid was prepared with different loading amounts of 12-tungstophosphoric acid. Doped polyaniline was characterized by XRD, SEM, and FT-IR techniques and the Keggin anion of heteropoly acid was detected on the polymer. Doped polymer was used as heterogeneous solid acid catalyst for the synthesis of 2-substituted benzimidazoles by the reaction of o-phenylenediamine with various types of aldehydes. The activity and reusability of the catalyst were found to be good.
引用
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页码:1365 / 1371
页数:7
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