Highly Efficient Synthesis of 2-Substituted and 1,2-Disubstituted BenzimidazoleDerivatives using Sulfonated Organic Heteropolyacid Salts: as a Recyclable and Green Solid Catalysts
Publish place: National Conference on Nanotechnology and Green Chemistry
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IAUET01_022
تاریخ نمایه سازی: 9 تیر 1392
Abstract:
In thispaper, we introduce two nonconformist ionic liquid [MIMPS](3)PW(12)O(40) and[TEAPS](3)PW(12)O(40) as a green solid acid catalysts for the highly efficient and green synthesis of2-substituted and 1,2-disubstituted benzimidazole derivatives via the one-pot condensation of1,2-phenylenediamine and various aromatic aldehydes.Various aromatic aldehydes were utilized in the reaction and in all situations the desired product were synthesized successfully.This reaction has been carried out in the presence of 1 mol% of catalysts in water at room temperature. The reusability of the catalysts was demonstrated by a five-run test. The described novel synthesis method propose several advantages of safety, short reaction times, mild condition, high yields, simplicity and easy workup compared to the traditional synthesis method.
Keywords:
Heteropolyacid salt , Ionic liquid , Green solid acid catalyst , 2-Substituted benzimidazole , 1 , 2-Disubstituted benzimidazole , Water solvent
Authors
Effat Samiei
Department of Chemistry,Islamic Azad University Ayatollah Amoli,Amol, Iran
Seyed Mohammad Vahdat
Department of Chemistry,Islamic Azad University Ayatollah Amoli,Amol, Iran
Saeed Baghery
Young Researchers Club,Islamic Azad University Ayatollah Amoli,Amol, Iran
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