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无溶剂条件下碳基固体酸催化一锅法合成酰胺烷基萘酚(英文)

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催化学报 2014年第4期35卷 490-495页

作者： Abolghasem Davoodnia Rahil Mahjoobin niloofar tavakoli-hoseini Department of Chemistry Faculty of SciencesMashhad BranchIslamic Azad University

An efficient, environmentally friendly procedure for the synthesis of amidoalkyl naphthols through the one‐pot, three‐component reaction of β‐naphthol, aryl aldehydes, and acetamide in the presence of a carbon‐based solid acid under thermal solvent‐free conditions is described. The beneficial fea-tures of this new synthetic approach include short reaction time, high yields, clean reaction profiles, and a simple work‐up procedure. Furthermore, the catalyst can be readily recycled and reused four times without obvious significant loss of activity. The structure of the catalyst was confirmed by Fourier transform infrared spectroscopy, N2 adsorption/desorption analysis, and X‐ray diffraction.

关键词：一锅法合成无溶剂条件固体酸催化 β-萘酚胺烷基碳基简便反应时间

高效可重复使用多相催化剂Ce(SO_4)_2·4H_2O用于无溶剂一锅合成2,3-二氢喹唑啉-4(1H)-酮(英文)

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催化学报 2014年第7期35卷 1054-1058页

作者： Abolghasem Davoodnia Maryam Khashi niloofar tavakoli-hoseini Department of Chemistry Mashhad BranchIslamic Azad University MashhadIran

Cerium(IV) sulfate tetrahydrate, Ce(SO4)2·4H2O, is a novel inorganic solid acidic catalyst that efficiently catalyzes the synthesis of 2,3-dihydroquinazolin-4(1H)-ones via the one-pot three- component reaction of isatoic anhydride, aromatic aldehydes, and a nitrogen source(ammonium acetate, ammonium carbonate, ammonium chloride, or methylamine) under solvent-free conditions. The desired products are obtained in short reaction time with high yields. The catalyst is inexpensive and readily available and can be recovered conveniently and reused such that considerable catalytic activity can still be achieved after the fifth run. Easy work-up and avoiding the use of harmful organic solvents are other advantages of this simple procedure.

关键词：非均相催化剂无溶剂条件一锅法合成硫酸盐喹唑啉可重复使用二氢铈

磺化碳催化Biginelli反应一锅法合成3,4-二氢-2(1H)-酮和硫酮(英文)

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催化学报 2012年第4期33卷 706-710页

作者： Maryam MOGHADDAS Abolghasem DAVOODNIA Majid M.HERAVI niloofar tavakoli-hoseini Department of Chemistry Mashhad BranchIslamic Azad University Department of Chemistry School of SciencesAlzahra University

A sulfonated carbon material was shown to be a highly efficient,eco-friendly,and recyclable solid acid catalyst for the Biginelli reaction of β-ketoester,aldehyde,and urea or thiourea under solvent-free *** gave 3,4-dihydropyrimidin-2(1H)-ones and-thiones in good to excellent *** method has the advantages of a simple procedure with easy work-up,short reaction time,and high *** catalyst can be recycled after a simple work-up and was reused four times without substantial reduction in activity.

关键词：化学催化高压高温

Carbon-Based Solid Acid as An Efficient and Reusable Catalyst for One-Pot Synthesis of Tetrasubstituted Imidazoles under Solvent-Free Conditions

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Chinese Journal of Chemistry 2011年第1期29卷 203-206页

作者： tavakoli-hoseini, niloofar Davoodnia, Abolghasem Department of Chemistry Faculty of Sciences Islamic Azad University Mashhad Branch Mashhad lran

Carbon-based solid acid catalyst was found to be highly efficient, eco-friendly and recyclable heterogeneous catalyst for the multicomponent reaction of benzil, aromatic aldehyde, primary amine and ammonium acetate, giving rise to 1,2,4,5-tetrasubstituted imidazoles in good to excellent yields. The present methodology offers several advantages, such as high yields, short reaction time, mild reaction condition and a recyclable catalyst with a very easy work up.

关键词： carbon-based solid acid heterogeneous catalysis multicomponent reaction tetrasubstituted imidazole,solvent-free condition

Synthesis of Pyrazolo[3,4-d]pyrimidin-4-ones Catalyzed by Brensted-acidic Ionic Liquids as Highly Efficient and Reusable Catalysts

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Chinese Journal of Chemistry 2011年第11期29卷 2421-2426页

作者： tavakoli-hoseini, niloofar Moloudi, Raheleh Davoodnia, Abolghasem Shaker, Mohammad Department of Chemistry Mashhad Branch Islamic Azad University Mashhad Iran

A convenient and efficient method for the synthesis of pyrazolo[3,4-d]pyrimidin-4-ones via heterocyclization reaction of 5-amino-lH-pyrazole-4-carboxamides with triethyl orthoesters using two BrCnsted-acidic ionic liquids, 3-methyl-l-（4-sulfonic acid）butylimidazolium hydrogen sulfate [MIM＋（CH2）4SO3H][ HSO4 ] or N-（4-sulfonic acid）butyl triethylammonium hydrogen sulfate [Et3N＋（CH2）4SO3H][ HSO4 ], as efficient homogeneous catalysts under solvent-free conditions is described.

关键词： homogeneous catalysis ionic liquids pyrazolo[3,4-d]pyrimidin-4-ones solvent-free condition triethyl orthoesters

SO3H-Functionalized Ionic Liquids： Green, Efficient and Reusable Catalysts for the Facile Dehydration of Aldoximes into Nitriles

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Chinese Journal of Chemistry 2011年第5期29卷 978-982页

作者： Davoodnia Abolghasem Khojastehnezhad Amir Bakavoli Mehdi tavakoli-hoseini niloofar Department of Chemistry Faculty of Sciences Mashhad Branch Islamic Azad University Mashhad Iran

Easily synthesized aldoximes have been converted to the corresponding nitriles under very mild conditions by a simple reaction using two halogen-free SO3H-functionalized ionic liquids, 3-methyl-l-（4-sulfonic acid）butylimidazolium hydrogen sulfate [MIM（CH2）aSO3H][HSO4] and 1-（4-sulfonic acid）butylpyridinium hydrogen sulfate [PY（CH2）4SO3H][HSO4], as catalyst and reaction medium without any additional organic solvent. The method was equally effective for aromatic aldoximes bearing electron-donating and electron-withdrawing substituents. Taking into account environmental and economical consideration, the protocol presented here has the merits of environmentally friendly, simple operation, easy work-up and very good yields. The catalysts could be recycled and reused for several times without noticeably decreasing in their catalytic activities.

关键词： ionic liquid aldoxime nitrile dehydration

Silica Gel-Supported Polyphosphoric Acid （PPA/SiO2）： An Efficient and Reusable Heterogeneous Catalyst for Facile Synthesis of 14-Aryl-14H-dibenzo[aj]xanthenes under Solvent-free Conditions

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Chinese Journal of Chemistry 2011年第2期29卷 297-302页

作者： Khojastehnezhad Amir Davoodnia Abolghasem Bakavoli Mehdi tavakoli-hoseini niloofar Zeinali-Dastmalbaf Mohsen Department of Chemistry Faculty of Sciences Islamic Azad University Mashhad Branch Mashhad Iran

A simple, efficient and green method for the synthesis of 14-aryl-14H-dibenzo[aj]xanthenes by a one-pot condensation reaction of β-naphthol and aryl aldehydes using silica gel-supported polyphosphoric acid （PPA/SiO2）, an effective and reusable catalyst, under solvent-free conditions is described. The present methodology offers several advantages, such as a simple procedure with an easy work-up, short reaction times, high yields, and the absence of any volatile and hazardous organic solvents.

关键词： 14-Aryl-14H-dibenzo[a,j]xanthenes PPA/SiO2 heterogeneous catalysis green chemistry solvent-flee conditions

One-pot Green Procedure for Synthesis of Tetrahydrobenzo[a]- xanthene-11-one Catalyzed by Bronsted Ionic Liquids under Solvent-free Conditions

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Chinese Journal of Chemistry 2011年第7期29卷 1441-1445页

作者： Zakeri, Masoumeh Heravi, Majid M. Saeedi, Mina Karimi, Narges Oskooie, Hossein A. tavakoli-hoseini, niloofar Department of Chemistry School of Sciences Alzahra University Vanak Tehran Iran Department of Chemistry School of Sciences Islamic Azad University Khorasan Branch Mashhad Iran

An efficient one-pot condensation of β-naphthol, aldehydes and cyclic 1,3-dicarbonyl compound has been achieved with ionic liquids as catalyst, thus a variety of 8,9,10,12-tetrahydrobenzo[a]xanthen-ll-one derivatives were prepared in good yields. The present approach offers several advantages such as shorter reaction times, good yields and mild reaction conditions.

关键词： ionic liquids benzoxanthene multicomponent reactions solvent-free

On Water： Bronsted Acidic Ionic Liquid [（CH2）4SO3HMIM][HSO4] Catalysed Synthesis of Oxindoles Derivatives

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Chinese Journal of Chemistry 2011年第2期29卷 321-323页

作者： Karimi Narges Oskooi Hooesin Heravi Majid Saeedi Mina Zakeri Masoumeh tavakoli niloofar Department of Chemistry School of Science Alzahra University Vanak Tehran Iran Department of Chemistry Faculty of Sciences Islamic Azad University Mashhad Branch Mashhad Iran

Some oxindoles derivatives are synthesized from the condensation of indoles with isatins in the presence of green and recycable catalyst [（CH2）4SO3HMIM] [HSO4] in water at room temperature.

关键词： on water Bronsted acidic ionic liquid indole isatin oxindole