scholarly journals Multicomponent synthesis of sulfonamides from triarylbismuthines, nitro compounds and sodium metabisulfite in deep eutectic solvents

2019 ◽  
Vol 21 (15) ◽  
pp. 4127-4132 ◽  
Author(s):  
Xavier Marset ◽  
Javier Torregrosa-Crespo ◽  
Rosa M. Martínez-Espinosa ◽  
Gabriela Guillena ◽  
Diego J. Ramón
Keyword(s):  
Deep Eutectic Solvent ◽  
Reaction Medium ◽  
Deep Eutectic Solvents ◽  
Nitro Compounds ◽  
Sodium Metabisulfite ◽  
Multicomponent Synthesis

A sustainable synthesis of sulfonamides using a copper-catalysed process starting from triarylbismuthines, Na2S2O5 and nitro compounds in a Deep Eutectic Solvent (DES) as a reaction medium is described.

scholarly journals Multicomponent Synthesis of Sulfones and Sulfides from Triarylbismuthines and Sodium Metabisulfite in Deep Eutectic Solvents

2020 ◽  
Vol 2020 (23) ◽  
pp. 3462-3467
Author(s):  
Beatriz Saavedra ◽  
Xavier Marset ◽  
Gabriela Guillena ◽  
Diego J. Ramón
Keyword(s):  
Deep Eutectic Solvents ◽  
Sodium Metabisulfite ◽  
Multicomponent Synthesis

scholarly journals Experimental investigation on the correlation between the physicochemical properties and catalytic activity of six DESs in Kabachnik-Fields reaction

2020 ◽  
Author(s):  
Shaibuna Machingal ◽  
Sreekumar Krishnapillai
Keyword(s):  
Physicochemical Properties ◽  
Deep Eutectic Solvent ◽  
Reaction Medium ◽  
Deep Eutectic Solvents ◽  
One Pot ◽  
Dimethyl Phosphite ◽  
Type Iv ◽  
Short Period ◽  
Regular Work ◽  
Work Up

Physicochemical properties of six Type IV- Deep eutectic solvents formed from ZrOCl2.8H2O/ CeCl3.7H2O   with urea, ethylene glycol & glycerol were compared. The study was performed by correlating the properties of DESs with their activity in Kabachnik-Fields reaction. Among the six DESs, lower density, viscosity, higher acidity & thermal stability were observed for DES 1(Deep eutectic solvent developed from ZrOCl2.8H2O and urea at 1: 5 ratio) and is reported as an excellent catalyst and reaction medium for the productive synthesis of α-aminophosphonates within a short period of time. One pot reaction of an aldehyde, dimethyl phosphite and amine (Kabachnik-Fields/ Phospha-Mannich reaction) took place at room temperature to give the corresponding α-aminophosphonates in good yield and the precipitation of these products in to water avoided the regular work up process. Catalyst was recycled up to five times without any loss in its activity.

Toxico-metabolomics study of a deep eutectic solvent comprising choline chloride and urea suggests in vivo toxicity involving oxidative stress and ammonia stress

2021 ◽  
Vol 23 (3) ◽  
pp. 1300-1311 ◽  
Author(s):  
Dasom Jung ◽  
Jae Back Jung ◽  
Seulgi Kang ◽  
Ke Li ◽  
Inseon Hwang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
In Vivo Toxicity ◽  
Metabolomics Study ◽  
Ammonia Stress

The in vitro and in vivo studies suggest that choline chloride-based deep eutectic solvents may not be considered as pure, safe mixtures even if they consist of safe compounds.

scholarly journals Deep Eutectic Solvents Based Choline Chloride for Enzymatic Biodiesel Production from Degumming Palm Oil

2020 ◽  
Vol 32 (4) ◽  
pp. 733-738 ◽  
Author(s):  
R. Manurung ◽  
Taslim ◽  
A.G.A. Siregar
Keyword(s):  
Palm Oil ◽  
Raw Materials ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Biodiesel Production ◽  
Chloride Salt ◽  
Enzymatic Reactions ◽  
Potential Applications ◽  
Palm Oil Biodiesel

Deep eutectic solvents (DESs) have numerous potential applications as cosolvents. In this study, use of DES as organic solvents for enzymatic biodiesel production from degumming palm oil (DPO) was investigated. Deep eutectic solvent was synthesized using choline chloride salt (ChCl) compounds with glycerol and 1,2-propanediol. Deep eutectic solvent was characterized by viscosity, density, pH and freezing values, which were tested for effectiveness by enzymatic reactions for the production of palm biodiesel with raw materials DPO. Deep eutectic solvent of ChCl and glycerol produced the highest biodiesel yield (98.98%); weight of DES was only 0.5 % of that of the oil. In addition, the use of DES maintained the activity and stability of novozym enzymes, which was assessed as the yield until the 6th usage, which was 95.07 % biodiesel yield compared with the yield without using DES. Hence, using DES, glycerol in enzymatic biodiesel production had high potentiality as an organic solvent for palm oil biodiesel production

ChemInform Abstract: Deep Eutectic Solvents: The Organic Reaction Medium of the Century

ChemInform ◽  
2016 ◽  
Vol 47 (14) ◽  
Author(s):  
Diego A. Alonso ◽  
Alejandro Baeza ◽  
Rafael Chinchilla ◽  
Gabriela Guillena ◽  
Isidro M. Pastor ◽  
...  
Keyword(s):  
Reaction Medium ◽  
Deep Eutectic Solvents ◽  
Organic Reaction

scholarly journals Deep Eutectic Solvents for the Valorisation of Lignocellulosic Biomasses towards Fine Chemicals

Biomass ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 29-59
Author(s):  
Enrico Scelsi ◽  
Antonella Angelini ◽  
Carlo Pastore
Keyword(s):  
Environmental Impact ◽  
Lignocellulosic Biomass ◽  
Deep Eutectic Solvent ◽  
Modern Society ◽  
Deep Eutectic Solvents ◽  
Critical Discussion ◽  
Fine Chemicals ◽  
Enzymatic Transformation ◽  
Alternative Sources ◽  
Industrial Level

The growing demand for energy and materials in modern society pushes scientific research to finding new alternative sources to traditional fossil feedstocks. The exploitation of biomass promises to be among the viable alternatives with a lower environmental impact. Making biomass exploitation technologies applicable at an industrial level represents one of the main goals for our society. In this work, the most recent scientific studies concerning the enhancement of lignocellulosic biomasses through the use of deep eutectic solvent (DES) systems have been examined and reported. DESs have an excellent potential for the fractionation of lignocellulosic biomass: the high H-bond capacity and polarity allow the lignin to be deconvolved, making it easier to break down the lignocellulosic complex, producing a free crystallite of cellulose capable of being exploited and valorised. DESs offer valid alternatives of using the potential of lignin (producing aromatics), hemicellulose (achieving furfural) and cellulose (delivering freely degradable substrates through enzymatic transformation into glucose). In this review, the mechanism of DES in the fractionation of lignocellulosic biomass and the main possible uses for the valorisation of lignin, hemicellulose and cellulose were reported, with a critical discussion of the perspectives and limits for industrial application.

A solidified floating organic drop-dispersive liquid-liquid microextraction based on in-situ formed fatty acid-based deep eutectic solvents for extraction of benzophenone-UV filters from water samples

2021 ◽  
Author(s):  
Huazi Wang ◽  
Qinqin Xu ◽  
Jinglong Jiao ◽  
Hai Wu
Keyword(s):  
Fatty Acid ◽  
Water Samples ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Uv Filters ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

A solidified floating organic drop-dispersive liquid-liquid microextraction (SFOD-DLLME) was established for extraction of four benzophenone-ultraviolet filters (BP-UV filters) from water samples using a fatty acid deep eutectic solvent (DES) as...

Deep eutectic solvent delignification: Impact of initial lignin

BioResources ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. 7301-7310
Author(s):  
Veronika Majová ◽  
Silvia Horanová ◽  
Andrea Škulcová ◽  
Jozef Šima ◽  
Michal Jablonský
Keyword(s):  
Lactic Acid ◽  
Oxalic Acid ◽  
Lignin Content ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Kappa Number ◽  
Kraft Pulps ◽  
Oxygen Delignification ◽  
Detailed Understanding

This study aimed to resolve the issue of the lack of detailed understanding of the effect of initial lignin content in hardwood kraft pulps on pulp delignification by deep eutectic solvents. The authors used Kappa number of the concerned pulp, intrinsic viscosity, and selectivity and efficiency of delignification as the parameters of the effect. The pulp (50 g oven dry pulp) was treated with four different DESs systems based on choline chloride with lactic acid (1:9), oxalic acid (1:1), malic acid (1:1), and system alanine:lactic acid (1:9); the results were compared to those reached by oxygen delignification. The results showed that the pulp with a higher initial lignin content had a greater fraction of easily removed lignin fragments.

scholarly journals Combining acid-based deep eutectic solvents and microwave irradiation for improved chestnut shell waste valorization

2021 ◽  
Author(s):  
José González-Rivera ◽  
Angelica Mero ◽  
Elena Husanu ◽  
Andrea Mezzetta ◽  
Carlo Ferrari ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Waste Valorization ◽  
Simultaneous Extraction ◽  
Microwave Assisted ◽  
Chestnut Shell ◽  
Shell Waste ◽  
Key Features

Key features of the deep eutectic solvent-microwave assisted simultaneous extraction of polyphenols and delignification pretreatment of chestnut shell waste are presented.

Deep eutectic solvent catalyzed Friedel–Crafts alkylation of electron-rich arenes with aldehydes

RSC Advances ◽  
2015 ◽  
Vol 5 (73) ◽  
pp. 59022-59026 ◽  
Author(s):  
Ailing Wang ◽  
Pengfei Xing ◽  
Xueliang Zheng ◽  
Hongyu Cao ◽  
Guang Yang ◽  
...  
Keyword(s):  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents

In this study, six deep eutectic solvents were synthesized. Research shows that [ChCl][ZnCl2]2 can be used for catalyzing F–C alkylations of electron-rich arenes with aldehydes successfully. After five cycles, the yields remain about 89–94%.

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