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Lakouraj, Moslem, Fallah, Zari, Tajbakhsh, Mahmood, Hasantabar, Vahid. (1393). H-imidazolium Acidic Ionic Liquids as Efficient Catalysts in the Synthesis of Xanthenes under Solvent-Free Conditions. پژوهشنامه مدیریت اجرایی, 3(1), 45-56.
Moslem Lakouraj; Zari Fallah; Mahmood Tajbakhsh; Vahid Hasantabar. "H-imidazolium Acidic Ionic Liquids as Efficient Catalysts in the Synthesis of Xanthenes under Solvent-Free Conditions". پژوهشنامه مدیریت اجرایی, 3, 1, 1393, 45-56.
Lakouraj, Moslem, Fallah, Zari, Tajbakhsh, Mahmood, Hasantabar, Vahid. (1393). 'H-imidazolium Acidic Ionic Liquids as Efficient Catalysts in the Synthesis of Xanthenes under Solvent-Free Conditions', پژوهشنامه مدیریت اجرایی, 3(1), pp. 45-56.
Lakouraj, Moslem, Fallah, Zari, Tajbakhsh, Mahmood, Hasantabar, Vahid. H-imidazolium Acidic Ionic Liquids as Efficient Catalysts in the Synthesis of Xanthenes under Solvent-Free Conditions. پژوهشنامه مدیریت اجرایی, 1393; 3(1): 45-56.

H-imidazolium Acidic Ionic Liquids as Efficient Catalysts in the Synthesis of Xanthenes under Solvent-Free Conditions

Caspian Journal of Chemistry
مقاله 6، دوره 3، شماره 1، دی 2014، صفحه 45-56    اصل مقاله (182.56 K)
نوع مقاله: Research paper
نویسندگان
Moslem Lakouraj* ؛ Zari Fallah؛ Mahmood Tajbakhsh؛ Vahid Hasantabar
Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar 47416, Iran
تاریخ دریافت: 09 اردیبهشت 1393،  تاریخ بازنگری: 04 مرداد 1393،  تاریخ پذیرش: 21 مرداد 1393 
چکیده
Bifunctional acidic ionic liquids, having both H-imidazolium and -SO3H groups as cation moieties (H-BFAILs) and CF3SO3- as anion, were synthesized in high yields. These H-BFAILs showed significant hydrophilic properties, lower acidity and higher thermal stability relative to common ionic liquids, due to their unique structures. The (propyl or butyl-3-sulfonic) imidazolium trifluoromethane sulfonates ([IMPS][TfO] and [IMBS][TfO]) were employed as efficient catalysts for the synthesis of 14-substituted-14H-dibenzo[a.j]xanthene derivatives via the condensation of β-naphthol with aromatic aldehydes at 80◦C under solvent-free conditions. The workup procedure is green, involving only washing the reaction mixture with water to remove the ionic liquid. The acidic ionic liquids were easily recovered and reused for at least seven successive runs without significant loss of catalytic activity.
کلیدواژه‌ها
Acidic ionic liquids؛ Dibenzoxanthenes؛ One-pot reaction؛ Solvent-free؛ Recyclable catalyst
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