Synergy of Dual Functional Sites for Conversion of CO2 in a Cycloaddition Reaction under Solvent-Free Conditions by a Zn(II)-Based Coordination Network with a Ladder Motif

2021 ◽  
Author(s):  
Unnati Patel ◽  
Parth Patel ◽  
Bhavesh Parmar ◽  
Abhishek Dadhania ◽  
Eringathodi Suresh
Keyword(s):  
Cycloaddition Reaction ◽  
Solvent Free ◽  
Functional Sites ◽  
Coordination Network ◽  
Dual Functional ◽  
Solvent Free Conditions

Solvent-free synthesis of pyrrolo [2,1-α]isoquinolines via one-pot four-component reaction

2021 ◽  
Vol 18 ◽  
Author(s):  
Ali Aminkhani ◽  
Sina Sharifi
Keyword(s):  
Cycloaddition Reaction ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Solvent Free Synthesis

: An efficient four-component reaction to synthesize pyrrolo[2,1-a]isoquinolines from malononitrile, aromatic aldehydes, isoquinoline, and cyclohexyl isocyanide under solvent-free conditions is described. In a convenient, simple, and efficient one-pot procedure, the domino Knoevenagel-nucleophilic cycloaddition reaction affords excellent yields of products in less than 1 h.

A [bmim]Cl-promoted domino protocol using an isocyanide-based [4+1]-cycloaddition reaction for the synthesis of diversely functionalized 3-alkylamino-2-alkyl/aryl/hetero-aryl indolizine-1-carbonitriles under solvent-free conditions

2020 ◽  
Vol 44 (8) ◽  
pp. 3241-3248 ◽  
Author(s):  
Amol Balu Atar ◽  
Jongmin Kang ◽  
Arvind H. Jadhav
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Cycloaddition Reaction ◽  
Solvent Free ◽  
Alkyl Aryl ◽  
Mild Conditions ◽  
Solvent Free Conditions ◽  
Coupling Strategy ◽  
Multicomponent Coupling

A room temperature-based ionic liquid [bmim]Cl-catalyzed multicomponent coupling strategy for the synthesis of 3-alkylamino-2-alkyl/aryl/hetero-aryl indolizine-1-carbonitrile derivatives under mild conditions is shown.

scholarly journals Zn 1,3,5-benzenetricarboxylate as an efficient catalyst for the synthesis of cyclic carbonates from CO2

RSC Advances ◽  
2018 ◽  
Vol 8 (17) ◽  
pp. 9192-9201 ◽  
Author(s):  
Chao Feng ◽  
Xianglei Cao ◽  
Liugen Zhang ◽  
Changyan Guo ◽  
Naeem Akram ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Cycloaddition Reaction ◽  
Cyclic Carbonate ◽  
Solvent Free ◽  
Cyclic Carbonates ◽  
Efficient Catalyst ◽  
Solvent Free Conditions

[Zn3(BTC)2], a heterogeneous catalyst, can efficiently catalyze the cycloaddition reaction. Under relatively moderate and solvent-free conditions, the yield of cyclic carbonate reached 99%.

N,N,N′,N′-Tetramethylethylene-diaminium-N,N′-disulfonic acid trifluoroacetate and pyridinium-N-sulfonic acid hydrogen sulfate as highly effective dual-functional catalysts for the preparation of N,N′-alkylidene bisamides

2019 ◽  
Vol 74 (9) ◽  
pp. 641-647 ◽  
Author(s):  
Zahra Kordrostami ◽  
Abdolkarim Zare ◽  
Mostafa Karami
Keyword(s):  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
Disulfonic Acid ◽  
Hydrogen Sulfate ◽  
Reaction Conditions ◽  
Dual Functional ◽  
Solvent Free Conditions ◽  
Acidic Ionic Liquids

AbstractIn this research, Brønsted-acidic ionic liquids N,N,N′,N′-tetramethylethylene-diaminium-N,N′-disulfonic acid trifluoroacetate ([TMEDSA][TFA]2) and pyridinium-N-sulfonic acid hydrogen sulfate ([Py-SO3H][HSO4]) have been introduced as dual-functional catalysts for the green, simple and effective preparation of N,N′-alkylidene bisamides by the reaction of primary amides (2 eq.) with arylaldehydes (1 eq.) under solvent-free conditions. The reaction results and conditions of the catalysts have been compared with the previously reported ones. [TMEDSA][TFA]2 and [Py-SO3H][HSO4] were superior to the previously reported catalysts in terms of two or more of these factors: reaction times (10–45 min), yields (86–98%), temperature and the reaction conditions. Additionally, a plausible and attractive mechanism based on dual functionality of the catalysts has been proposed.

Withdrawal Notice: Recent Advances in Sonogashira Cross-Coupling Reactions Under Solvent-Free Conditions

2020 ◽  
Vol 24 ◽  
Author(s):  
Teng Wang ◽  
Zongrui Liu ◽  
Songlin Wang ◽  
Esmail Vessally
Keyword(s):  
Organic Chemistry ◽  
Editorial Policy ◽  
Cross Coupling ◽  
Solvent Free ◽  
Coupling Reactions ◽  
Editorial Policies ◽  
Cross Coupling Reactions ◽  
Recent Advances ◽  
Solvent Free Conditions ◽  
Copyright Permission

The article has been withdrawn at the request of editor of the journal Current Organic Chemistry: Bentham Science apologizes to the readers of the journal for any inconvenience this may have caused. The Bentham Editorial Policy on Article Withdrawal can be found at https://benthamscience.com/editorial-policies-main.php BENTHAM SCIENCE DISCLAIMER: It is a condition of publication that manuscripts submitted to this journal have not been published and will not be simultaneously submitted or published elsewhere. Furthermore, any data, illustration, structure or table that has been published elsewhere must be reported, and copyright permission for reproduction must be obtained. Plagiarism is strictly forbidden, and by submitting the article for publication the authors agree that the publishers have the legal right to take appropriate action against the authors, if plagiarism or fabricated information is discovered. By submitting a manuscript, the authors agree that the copyright of their article is transferred to the publishers if and when the article is accepted for publication.

Chlorosulfonic Acid Supported Piperidine-4-carboxylic Acid (PPCA) Functionalized Fe3O4 Nanoparticles (Fe3O4-PPCA): The Efficient, Green and Reusable Nanocatalyst for the Synthesis of Pyrazolyl Coumarin Derivatives under Solvent-Free Conditions

2019 ◽  
Vol 22 (2) ◽  
pp. 123-128
Author(s):  
Setareh Habibzadeh ◽  
Hassan Ghasemnejad-Bosra ◽  
Mina Haghdadi ◽  
Soheila Heydari-Parastar
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles ◽  
High Efficiency ◽  
Reaction Times ◽  
Chlorosulfonic Acid ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Magnetic Nanocatalyst ◽  
One Pot ◽  
Solvent Free Conditions

Background: In this study, we developed a convenient methodology for the synthesis of coumarin linked to pyrazolines and pyrano [2,3-h] coumarins linked to 3-(1,5-diphenyl-4,5- dihydro-1H-pyrazol-3-yl)-chromen-2-one derivatives using Chlorosulfonic acid supported Piperidine-4-carboxylic acid (PPCA) functionalized Fe3O4 nanoparticles (Fe3O4-PPCA) catalyst. Materials and Methods:: Fe3O4-PPCA was investigated as an efficient and magnetically recoverable Nanocatalyst for the one-pot synthesis of substituted coumarins from the reaction of coumarin with a variety of aromatic aldehydes in high to excellent yield at room temperature under solvent-free conditions. The magnetic nanocatalyst can be easily recovered by applying an external magnet device and reused for at least 10 reaction runs without considerable loss of reactivity. Results and Conclusion: The advantages of this protocol are the use of commercially available materials, simple and an inexpensive procedure, easy separation, and an eco-friendly procedure, and it shows good reaction times, good to high yields, inexpensive and practicability procedure, and high efficiency.

Preparation and Characterization of a Novel Room Temperature Dicationic Ionic Liquid and its Application in the Synthesis of Xanthenediones Under Solvent-Free Conditions

2018 ◽  
Vol 21 (8) ◽  
pp. 602-608 ◽  
Author(s):  
Zainab Ehsani-Nasab ◽  
Ali Ezabadi
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Reaction Times ◽  
Significant Loss ◽  
Solvent Free ◽  
Acidity Function ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Hammett Acidity Function ◽  
Dicationic Ionic Liquid

Aim and Objective: In the present work, 1, 1’-sulfinyldiethylammonium bis (hydrogen sulfate) as a novel room temperature dicationic ionic liquid was synthesized and used as a catalyst for xanthenediones synthesis. Material and Method: The dicationic ionic liquid has been synthesized using ethylamine and thionyl chloride as precursors. Then, by the reaction of [(EtNH2)2SO]Cl2 with H2SO4, [(EtNH2)2SO][HSO4]2 was prepared and after that, it was characterized by FT-IR, 1H NMR, 13C NMR as well as Hammett acidity function. This dicationic ionic liquid was used as a catalyst for the synthesis of xanthenediones via condensation of structurally diverse aldehydes and dimedone under solvent-free conditions. The progress of the reaction was monitored by thin layer chromatography (ethyl acetate/n-hexane = 3/7). Results: An efficient solvent-free method for the synthesis of xanthenediones has been developed in the presence of [(EtNH2)2SO][HSO4]2 as a powerful catalyst with high to excellent yields, and short reaction times. Additionally, recycling studies have demonstrated that the dicationic ionic liquid can be readily recovered and reused at least four times without significant loss of its catalytic activity. Conclusion: This new dicationic ionic liquid can act as a highly efficient catalyst for xanthenediones synthesis under solvent-free conditions.

1, 1’-Sulfinyldiethylammonium Bis (Hydrogen Sulfate) as a Recyclable Dicationic Ionic Liquid Catalyst for the Efficient Solvent-free Synthesis of 3, 4-Dihydropyrimidin-2(1H)-ones via Biginelli Reaction

2020 ◽  
Vol 23 (2) ◽  
pp. 157-167
Author(s):  
Zainab Ehsani-Nasab ◽  
Ali Ezabadi
Keyword(s):  
Ionic Liquid ◽  
Biginelli Reaction ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Hydrogen Sulfate ◽  
One Pot ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Solvent Free Conditions ◽  
Dicationic Ionic Liquid

Objective: A facile and efficient method for synthesis of 3, 4-dihydropyrimidin-2(1H)-ones via Biginelli reaction catalyzed by a novel dicationic Brönsted acidic ionic liquid, [(EtNH2)2SO][HSO4]2, has been successfully developed. Material and Method:: 3, 4-Dihydropyrimidin-2(1H)-ones were synthesized through one-pot condensation of aromatic aldehydes, ethyl acetoacetate, and urea under solvent-free conditions using [(EtNH2)2SO][HSO4]2 as a novel catalyst. The progress of the reaction was monitored by thin-layer chromatography (ethyl acetate / n-hexane = 1 / 5). The products have been characterized by IR, 1H NMR, 13C NMR, and also by their melting points. Results: In this research, a library of dihydropyrimidinone derivatives was synthesized via Biginelli reaction under solvent-free conditions at 120oC using [(EtNH2)2SO][HSO4]2 as a catalyst. Various aromatic aldehydes, as well as heteroaromatic aldehydes, were employed, affording good to high yields of the corresponding products and illustrating the substrate generality of the present method. In addition, the prepared dicationic Brönsted acidic ionic liquid can be easily recovered and reused. Conclusion: 1, 1’-Sulfinyldiethylammonium bis (hydrogen sulfate), as a novel dicationic ionic liquid, can act as a highly efficient catalyst for the synthesis of 3, 4-dihydropyrimidin-2(1H)-ones under solvent-free conditions.

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