Zwitterionic liquid (ZIL) coated CuO as an efficient catalyst for the green synthesis of bis-coumarin derivatives via one-pot multi-component reactions using mechanochemistry

2017 ◽  
Vol 41 (10) ◽  
pp. 3872-3881 ◽  
Author(s):  
Mayank Mayank ◽  
Amanpreet Singh ◽  
Pushap Raj ◽  
Randeep Kaur ◽  
Ajnesh Singh ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Environmentally Benign ◽  
Coumarin Derivatives ◽  
One Pot ◽  
Efficient Catalyst

ZIL@CuO1–3 were developed as a catalyst for the synthesis of bis-coumarins under environmentally benign conditions. Mechanochemistry induced synthesis of bis-coumarin derivatives with more than 90% yield was accomplished.

scholarly journals p-Sulfonic Acid Calix[4]arene as an Efficient Catalyst for One-Pot Synthesis of Pharmaceutically Significant Coumarin Derivatives under Solvent-Free Condition

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Hamed Tashakkorian ◽  
Moslem Mansour Lakouraj ◽  
Mona Rouhi
Keyword(s):  
Organic Compounds ◽  
Sulfonic Acid ◽  
Solvent Free ◽  
Environmentally Benign ◽  
Coumarin Derivatives ◽  
One Pot ◽  
Efficient Catalyst ◽  
Free Condition ◽  
Solvent Free Condition ◽  
Solvent Free Conditions

One-pot and efficient protocol for preparation of some potent pharmaceutically valuable coumarin derivatives under solvent-free condition via direct coupling using biologically nontoxic organocatalyst, calix[4]arene tetrasulfonic acid (CSA), was introduced. Calix[4]arene sulfonic acid has been incorporated lately as a magnificent and recyclable organocatalyst for the synthesis of some organic compounds. Nontoxicity, solvent-free conditions, good-to-excellent yields for pharmaceutically significant structures, and especially ease of catalyst recovery make this procedure valuable and environmentally benign.

scholarly journals Regioselective, one-pot, multi-component, green synthesis of substituted benzo[c]pyrazolo[2,7]naphthyridines

RSC Advances ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 5938-5950 ◽  
Author(s):  
Abida Ashraf ◽  
Zahid Shafiq ◽  
Khalid Mahmood ◽  
Muhammad Yaqub ◽  
Waqar Rauf
Keyword(s):  
Green Synthesis ◽  
Environmentally Benign ◽  
One Pot

An efficient and environmentally benign synthetic protocol has been developed for the synthesis of benzo[c]pyrazolo[2,7]naphthyridine derivatives through regioselective multi-component “on-water” reaction of isatin, malononitrile and 3-aminopyrazole.

CeCl3·7H2O as mild and efficient catalyst for the one-pot multicomponent synthesis of 8-aryl-7,8-dihydro[1,3]dioxolo[4,5-g]chromen-6-ones

2011 ◽  
Vol 76 (4) ◽  
pp. 235-241 ◽  
Author(s):  
Li-Qiang Wu ◽  
Wei-Lin Li ◽  
Fu-Lin Yan
Keyword(s):  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
The One ◽  
High Yields ◽  
Work Up

A series of new 8-aryl-7,8-dihydro[1,3]dioxolo[4,5-g]chromen-6-ones were synthesized via a three-component reaction of 3,4-methylenedioxyphenol, aromatic aldehydes and Meldrum’s acid in the presence of CeCl3·7H2O under solvent-free conditions. The method provided several advantages such as easy work-up, high yields and environmentally benign procedure.

Environmentally benign synthesis of methyl 6-amino-5-cyano-4-aryl-2,4-dihydropyrano[2,3-c]pyrazole-3-carboxylates using CeO2 nanoparticles as a reusable and robust catalyst

2016 ◽  
Vol 71 (11) ◽  
pp. 1135-1140 ◽  
Author(s):  
Javad Safaei-Ghomi ◽  
Mehrnoosh Asgari-Kheirabadi ◽  
Hossein Shahbazi-Alavi
Keyword(s):  
Condensation Reaction ◽  
Ceo2 Nanoparticles ◽  
Environmentally Benign ◽  
High Yield ◽  
Synthesis And Characterization ◽  
Dimethyl Acetylenedicarboxylate ◽  
One Pot ◽  
Efficient Catalyst ◽  
Benign Synthesis

AbstractIn this work, we report the synthesis and characterization of CeO2 nanoparticles as an efficient catalyst for the preparation of methyl 6-amino-5-cyano-4-aryl-2,4-dihydropyrano[2,3-c]pyrazole-3-carboxylates via one-pot four-component condensation reaction of dimethyl acetylenedicarboxylate, hydrazine hydrate, malononitrile, and aldehydes in aqueous medium. The use of a non-hazardous organic solvent, easy recovery of the catalyst, compatibility with various functional groups, and high yield of the products make the protocol attractive, greener, and economic.

Lemon Peel Powder: A Natural Catalyst for Multicomponent Synthesis of Coumarin Derivatives

2020 ◽  
Vol 7 (2) ◽  
pp. 140-148
Author(s):  
Ganesh D. Jadhav ◽  
Taufique Ahmed P. Mujawar ◽  
Sunil U. Tekale ◽  
Rajendra P. Pawar ◽  
Yogesh W. More
Keyword(s):  
Heterocyclic Compounds ◽  
Environmentally Benign ◽  
Coumarin Derivatives ◽  
Organic Transformations ◽  
Multicomponent Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Lemon Peel ◽  
Heterogenous Catalyst ◽  
High Yields

Background: Lemon peel powder was used as a natural catalyst for the synthesis of biscoumarins and 3,4-dihydropyrano[c]chromene derivatives. The catalyst is natural, biodegradable, environmentally benign and thus contributes a valuable addition to the existing sustainable methods for the synthesis of coumarin derivatives. Objective: Development of Green synthesis and use of Natural catalyst. Methods: Lemon peel powder was used as a natural, biodegradable, environmentally benign heterogenous catalyst for the synthesis of coumarin derivatives. Results: Natural lemon peel powder was successfully used as a heterogeneous catalyst for the synthesis of coumarin based heterocyclic compounds. Conclusion: In conclusion, an environmentally benign, green and one-pot multicomponent protocol has been developed for the synthesis of biscoumarins and 3,4-dihydropyrano[c]chromene derivatives using lemon peel powder as a natural and biodegradable catalyst. Lemon peel being natural, the present approach is sustainable and will highlight the emerging applications of natural resources for synthetic organic transformations. This protocol offers several advantages such as high yields, clean reaction conditions, and no pollution threat to the environment making it a useful and attractive process for the synthesis of coumarin derivatives.

scholarly journals An Efficient One-Pot Green Protocol for the Synthesis of 5-Unsubstituted 3,4-Dihydropyrimidin-2(1H)-Ones Using Recyclable Amberlyst 15 DRY as a Heterogeneous Catalyst via Three-Component Biginelli-Like Reaction

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Srinivasa Rao Jetti ◽  
Divya Verma ◽  
Shubha Jain
Keyword(s):  
Heterogeneous Catalyst ◽  
Solid Acid ◽  
Environmentally Benign ◽  
Chemical Waste ◽  
One Pot ◽  
Efficient Catalyst ◽  
Amberlyst 15 ◽  
Green Protocol ◽  
Recyclable Heterogeneous Catalyst ◽  
Work Up

An environmentally benign green protocol for the synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones using Amberlyst 15 DRY as a recyclable catalyst has been developed. The use of resinous, nontoxic, thermally stable, and inexpensive Amberlyst 15 DRY, as a recyclable heterogeneous catalyst, makes the process simple with negligible chemical waste. Among the various solid acid catalysts Amberlyst 15 DRY was found to be the most efficient catalyst with regard to reaction time, yield, and ease of work-up procedure.

Green synthesis and characterization of silver nanoparticles using Ferula latisecta leaf extract and their application as a catalyst for the safe and simple one-pot preparation of spirooxindoles in water

2016 ◽  
Vol 40 (4) ◽  
pp. 3343-3349 ◽  
Author(s):  
Zahra Rashid ◽  
Tara Moadi ◽  
Ramin Ghahremanzadeh
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Plant Extract ◽  
Ag Nanoparticles ◽  
Leaf Extract ◽  
Synthesis And Characterization ◽  
One Pot ◽  
Efficient Catalyst ◽  
Three Component Reaction

In this research, Ag nanoparticles were prepared via plant extract and applied as an efficient catalyst in a three component reaction for the synthesis of spirooxindols.

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