scholarly journals Ammonium-tagged ruthenium-based catalysts for olefin metathesis in aqueous media under ultrasound and microwave irradiation

2019 ◽  
Vol 15 ◽  
pp. 160-166 ◽  
Author(s):  
Łukasz Gułajski ◽  
Andrzej Tracz ◽  
Katarzyna Urbaniak ◽  
Stefan J Czarnocki ◽  
Michał Bieniek ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Microwave Irradiation ◽  
Ultrasonic Irradiation ◽  
Olefin Metathesis ◽  
Aqueous Media ◽  
Environmentally Friendly ◽  
Counter Ion

The influence of microwave and ultrasonic irradiation on the performance of ammonium-tagged Ru-based catalysts in olefin metathesis transformations in aqueous media was studied. Differences in the catalytic activity in correlation with the nature of the present counter ion and the size of the N-heterocyclic carbene (NHC) ligand were revealed. The presented methodology allows for preparation of a variety of polar and non-polar metathesis products under environmentally friendly conditions.

The Novel SO3H-Functionalized Ionic Liquids Promoted Synthesis of Xanthenedione Derivatives in Aqueous Media under Microwave Irradiation

2011 ◽  
Vol 391-392 ◽  
pp. 1354-1357 ◽  
Author(s):  
Bai Lin Li ◽  
Hua Ding Liang ◽  
Ai Guo Zhong ◽  
Dan Qian Xu
Keyword(s):  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Organic Solvents ◽  
Catalytic System ◽  
Aqueous Media ◽  
Environmentally Friendly ◽  
Separation Process ◽  
The Novel ◽  
Simple Operation

Novel SO3H-functionalized ionic liquids were successfully applied as catalysts for synthesis of xanthenediones under microwave irradiation in Aqueous. Various types of Xanthenes were provided in 90-97% yields using the catalytic system of [(HSO3-p)2im][CF3SO3]/H2O. The products could be conveniently separated from the reaction mixture by filtration and the dissolved catalyst could be reused without any treatment, which of the separation process was performed in water without using any organic solvents. The method not only has the adventages of shrot time and simple operation, but also is environmentally friendly.

scholarly journals Self-assembly of tetra(aniline) nanowires in acidic aqueous media with ultrasonic irradiation

2015 ◽  
Vol 3 (45) ◽  
pp. 11945-11952 ◽  
Author(s):  
Wei Lyu ◽  
Jiangtao Feng ◽  
Wei Yan ◽  
Charl FJ Faul
Keyword(s):  
Aqueous Medium ◽  
Ultrasonic Irradiation ◽  
Self Assembly ◽  
Aqueous Media ◽  
Environmentally Friendly ◽  
The Self ◽  
Environmentally Friendly Method

An environmentally friendly method is developed to explore the self-assembly of Ph/NH2-capped tetra(aniline) nanowires in acidic aqueous medium with ultrasonic irradiation.

A Clean One-pot Synthesis of 7-Amino-5-Aryl-6-Cyano-1,5-Dihydro-2H-Pyrano[2,3-d] Pyrimidine-2,4(3H)-Diones in Aqueous Media under Ultrasonic Irradiation

2005 ◽  
Vol 2005 (3) ◽  
pp. 162-163 ◽  
Author(s):  
Tong-Shou Jin ◽  
Li-Bin Liu ◽  
Ying Zhao ◽  
Tong-Shuang Li
Keyword(s):  
Ultrasonic Irradiation ◽  
Aqueous Media ◽  
Environmentally Friendly ◽  
Green Solvent ◽  
One Pot ◽  
One Pot Synthesis ◽  
Novel Approach ◽  
Work Up

A novel approach to the synthesis of 7-amino-5-aryl-6-cyano-1,5-dihydro-2H-pyrano[2,3-d]pyrimidine-2,4(3H)-diones in aqueous media under ultrasonic irradiation without catalyst is described. This method provides several advantages such as being environmentally friendly, simple work-up procedure and milder condition. In addition, water was chosen as a green solvent.

Eco-Friendly Synthesis of Pyrazoline Derivatives

2017 ◽  
Vol 9 (04) ◽  
Author(s):  
Mahesh G. Kharatmol ◽  
Deepali Jagdale
Keyword(s):  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Organic Synthesis ◽  
Ultrasonic Irradiation ◽  
Minimal Energy ◽  
Anticancer Activities ◽  
Conventional Methods

Pyrazoline class of compounds serve as better moieties for an array of treatments, they have antibacterial, antifungal, antiinflammatory, antipyretic, diuretic, cardiovascular activities. Apart from these they also have anticancer activities. So, pertaining to its importance, many attempts are made to synthesize pyrazolines. Since conventional methods of organic synthesis are energy and time consuming. There are elaborate pathways for green and eco-friendly synthesis of pyrazoline derivatives including microwave irradiation, ultrasonic irradiation, grinding and use of ionic liquids which assures the synthesis of the same within much lesser time and by use of minimal energy

scholarly journals Environmentally Friendly Nafion-Catalyzed Synthesis of Substituted 2-Ethyl-3-Methylquinolines from Aniline and Propionaldehyde under Microwave Irradiation

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 877
Author(s):  
Chieh-Kai Chan ◽  
Chien-Yu Lai ◽  
Cheng-Chung Wang
Keyword(s):  
Reaction Mechanism ◽  
Microwave Irradiation ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Environmentally Friendly ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Related Data ◽  
Heating Source ◽  
Chemical Structures

Herein, we report a facile synthetic methodology for the preparation of 2,3-dialkylquinolines from anilines and propionaldehydes. This cyclization involved environmentally friendly Nafion® NR50 as an acidic catalyst with microwave irradiation as the heating source. A series of substituted 2-ethyl-3-methylquinolines were prepared from various anilines and propionaldehyde derivatives through this protocol with good to excellent yields. Some new chemical structures were confirmed by X-ray single-crystal diffraction analysis and the related data were provided. The plausible reaction mechanism studies are also discussed.

scholarly journals Modification of proteins using olefin metathesis

2020 ◽  
Vol 4 (4) ◽  
pp. 1040-1051 ◽  
Author(s):  
Marco S. Messina ◽  
Heather D. Maynard
Keyword(s):  
Small Molecules ◽  
Olefin Metathesis ◽  
Aqueous Media ◽  
Metathesis Reactions ◽  
P Proteins

Proteins are modified with small molecules and polymers via olefin metathesis reactions in aqueous media.

A succinct access to ω-hydroxylated jasmonates via olefin metathesis

2017 ◽  
Vol 72 (7-8) ◽  
pp. 285-292 ◽  
Author(s):  
Guillermo H. Jimenez-Aleman ◽  
Selina Seçinti ◽  
Wilhelm Boland
Keyword(s):  
Abiotic Stress ◽  
Olefin Metathesis ◽  
Higher Plants ◽  
Environmentally Friendly ◽  
Signaling Molecules ◽  
Synthetic Route ◽  
Limited Availability ◽  
Cross Metathesis ◽  
Physiological Processes

AbstractIn higher plants, jasmonates are lipid-derived signaling molecules that control many physiological processes, including responses to abiotic stress, defenses against insects and pathogens, and development. Among jasmonates, ω-oxidized compounds form an important subfamily. The biological roles of these ω-modified derivatives are not fully understood, largely due to their limited availability. Herein, a brief (two-step), simple and efficient (>80% yield), versatile, gram-scalable, and environmentally friendly synthetic route to ω-oxidized jasmonates is described. The approach utilizes olefin cross-metathesis as the key step employing inexpensive, commercially available substrates and catalysts.

Silk degumming using microwave irradiation as an environmentally friendly surface modification method

2010 ◽  
Vol 11 (2) ◽  
pp. 234-240 ◽  
Author(s):  
Niyaz Mohammad Mahmoodi ◽  
Fereshteh Moghimi ◽  
Mokhtar Arami ◽  
Firoozmehr Mazaheri
Keyword(s):  
Surface Modification ◽  
Microwave Irradiation ◽  
Environmentally Friendly ◽  
Modification Method
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