A novel and green method for polycondensation reaction of 4-substituted phenylurazoles with different diisocyanates under solvent-free conditions

2008 ◽  
Vol 108 (6) ◽  
pp. 3462-3466 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Mohammad Dinari
Keyword(s):  
Solvent Free ◽  
Polycondensation Reaction ◽  
Green Method ◽  
Solvent Free Conditions

An extremely efficient and green method for the acylation of secondary alcohols, phenols and naphthols with a deep eutectic solvent as the catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98365-98368 ◽  
Author(s):  
Hai Truong Nguyen ◽  
Phuong Hoang Tran
Keyword(s):  
Room Temperature ◽  
Deep Eutectic Solvent ◽  
Solvent Free ◽  
Secondary Alcohols ◽  
Green Method ◽  
Solvent Free Conditions

An efficient and green method was developed for the acylation of secondary alcohols, phenols and naphthols using deep eutectic solvent [CholineCl][ZnCl2]3 as a catalyst at room temperature under solvent-free conditions.

Biogenic CuFe2O4 magnetic nanoparticles as a green, reusable and excellent nanocatalyst for acetylation reactions under solvent-free conditions

2018 ◽  
Vol 42 (18) ◽  
pp. 15200-15206 ◽  
Author(s):  
Rituparna Chutia ◽  
Bolin Chetia
Keyword(s):  
Magnetic Nanoparticles ◽  
Reaction Time ◽  
Solvent Free ◽  
Green Method ◽  
Short Reaction Time ◽  
Solvent Free Conditions

A convenient green method has been developed for the synthesis of biogenic CuFe2O4 magnetic nanoparticles using tea extracts within a very short reaction time.

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The article has been withdrawn at the request of editor of the journal Current Organic Chemistry: Bentham Science apologizes to the readers of the journal for any inconvenience this may have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.

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