scholarly journals Hydrogen peroxide/dimethyl carbonate: a green system for epoxidation of N-alkylimines and N-sulfonylimines. One-pot synthesis of N-alkyloxaziridines from N-alkylamines and (hetero)aromatic aldehydes

2016 ◽  
Vol 18 (18) ◽  
pp. 4859-4864 ◽  
Author(s):  
Jamil Kraïem ◽  
Donia Ghedira ◽  
Thierry Ollevier
Keyword(s):  
Hydrogen Peroxide ◽  
Dimethyl Carbonate ◽  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
Green Method ◽  
One Pot ◽  
One Pot Synthesis ◽  
Green System

A green method for epoxidation of imines using an environmentally benign oxidant system, H2O2/dimethyl carbonate, was developed.

One Pot Synthesis of Biscoumarins and Pyranocoumarins by Coconut Juice as a Natural Catalyst

2019 ◽  
Vol 6 (1) ◽  
pp. 20-27
Author(s):  
Bipasa Halder ◽  
Himadri S. Maity ◽  
Ahindra Nag
Keyword(s):  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
One Pot ◽  
Green Catalyst ◽  
One Pot Synthesis ◽  
Volatile Organic ◽  
Electron Withdrawing Group ◽  
Work Up ◽  
Active Methylene ◽  
By Products

Background: The conception of ‘Green chemistry’ is the much inventive chemistry which is potent and more environmentally benign. It is notable that many organic reactions take place in conventional organic solvents, known as volatile organic compounds. Being concerned about the environmental impact, we report a promoting medium, coconut juice (ACC) for one-pot synthesis of biscoumarins and pyranocoumarins which is safe, harmless, green and environmentally benign. Methods and Results: Substituted biscoumarins have been achieved by the reaction of biscoumarin and substituted aromatic aldehydes in presence of ACC which acts as a green catalyst cum solvent. Each reaction showed good to excellent yield in presence of both electron donating as well as electron withdrawing group on aromatic aldehyde without formation of any by-products. Similarly, pyranocoumarins have been achieved by the reaction of biscoumarin, substituted aromatic aldehydes, active methylene nitrile in presence of ACC. All the reactions proceed smoothly and gave higher yields in case of malononitrile in comparison of ethyl-2-cyanoacetate. Conclusion: A simple, eco-friendly and novel procedure was demonstrated for the synthesis of biscoumarins and pyranocoumarins using natural feedstock coconut juice. The major importance of using ACC juice is higher yields, no work-up and no column chromatography.

scholarly journals An environmentally benign one-pot synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3]oxazine-3-one derivatives catalysed by phosphomolybdic acid

2011 ◽  
Vol 76 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Atul Chaskar ◽  
Vimal Vyavhare ◽  
Vikas Padalkar ◽  
Kiran Phatangare ◽  
Hrushikesh Deokar
Keyword(s):  
Aromatic Aldehydes ◽  
Phosphomolybdic Acid ◽  
Environmentally Benign ◽  
One Pot ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
Novel Method

A phosphomolybdic acid catalysed novel method for the synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3]oxazine-3-one derivatives by a one-pot, three-component reaction of ?-naphthol, aromatic aldehydes and urea in excellent yields is described.

One-pot synthesis of bio-based polycarbonates from dimethyl carbonate and isosorbide under metal-free condition

2020 ◽  
Vol 22 (14) ◽  
pp. 4550-4560
Author(s):  
Wenjuan Fang ◽  
Zhencai Zhang ◽  
Zifeng Yang ◽  
Yaqin Zhang ◽  
Fei Xu ◽  
...  
Keyword(s):  
Dimethyl Carbonate ◽  
One Pot ◽  
Free Condition ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy

A synthetic strategy for bio-based polycarbonate was developed via one-pot polymerization of renewable monomer isosorbide and dimethyl carbonate using eco-friendly organo-catalysts.

Pt NPs@GO as a highly efficient and reusable catalyst for one-pot synthesis of acridinedione derivatives

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49295-49300 ◽  
Author(s):  
Handan Pamuk ◽  
Burak Aday ◽  
Fatih Şen ◽  
Muharrem Kaya
Keyword(s):  
Aromatic Aldehydes ◽  
Reusable Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
First Time

Pt NPs@GO has been used for the first time for synthesizing acridinedione from dimedone, aromatic aldehydes and various amines as a catalyst.

Catalytic application of SO42−/Fe–ZrO2nanoparticles synthesized by a urea hydrolysis method for environmentally benign one pot synthesis of 1,8-dioxodecahydroacridines

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86179-86190 ◽  
Author(s):  
Sagnika Pradhan ◽  
B. G. Mishra
Keyword(s):  
Heterogeneous Catalyst ◽  
Mixed Oxides ◽  
Urea Hydrolysis ◽  
Environmentally Benign ◽  
One Pot ◽  
Hydrolysis Method ◽  
One Pot Synthesis ◽  
Catalytic Application

A series of sulfate grafted Fe2O3–ZrO2mixed oxides (SFexZr) were prepared by urea hydrolysis method and studied as heterogeneous catalyst for synthesis of structurally diverse 1,8-dioxodecahydroacridines.

Retracted Article: One-pot synthesis of glycidol from glycerol and dimethyl carbonate over a highly efficient and easily available solid catalyst NaAlO2

2013 ◽  
Vol 15 (10) ◽  
pp. 2929-2934 ◽  
Author(s):  
Rongxian Bai ◽  
Hongkun Zhang ◽  
Fuming Mei ◽  
Shu Wang ◽  
Tao Li ◽  
...  
Keyword(s):  
Dimethyl Carbonate ◽  
Solid Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
Retracted Article
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