Results 141 to 150 of about 6,626 (297)

Choline chloride/glycerol/l-arginine (TNADES) as a new sustainable solvent catalyst reaction media in multicomponent synthesis of biological corestones of 2,3-dihydroquinazolin-4(1H)-ones, spiro-2-oxindoles and pyrazole-4-carbonitriles under mild conditions

open access: yesCurrent Research in Green and Sustainable Chemistry
Ternary natural deep eutectic solvent (TNADES) made of choline chloride, glycerol, and l-arginine was used as an efficient, new reusable solvent/catalyst media for (i) the synthesis of 2-substituted-2,3-dihydroquinazolin-4(1H)-ones through eco-friendly ...
Laleh Golestanifar, Ali Reza Sardarian
doaj   +1 more source

Natural Deep Eutectic Solvent-Based Ultrasound-Assisted Extraction of Flavonoids from Fagopyrum tataricum Bran

open access: yes
In this study, eleven kinds of flavonoids were identified from F. tataricum bran (FTB) by UPLC-Q-TOF-MS, and HPLC-DAD analysis revealed that four compounds, including rutin, quercetin, kaempferol, and nicotiflorin, were the most significant components ...
Zhou Xu   +3 more
core   +1 more source

The One‐Step Synthesis of Biologically Active Isochromans from Lignin‐Derived Aromatic Monomers in Tunable Deep Eutectic Solvents

open access: yesChemistry – A European Journal, EarlyView.
A straightforward one‐step protocol enables the synthesis of bio‐based and biologically active isochromans through the Oxa‐Pictet cyclization involving diverse aldehydes, including vanillin in combination with lignin‐derivable homovanillyl alcohol, a prominent aromatic platform chemical obtainable via diol‐assisted fractionation of lignocellulose ...
Anjali Kottayi   +6 more
wiley   +1 more source

Design and application of a novel natural deep eutectic solvent as a green solvent and catalyst for the efficient synthesis of tetrahydrobenzo[b]pyrans

open access: yesHeliyon
In this study, a novel natural deep eutectic solvent (NADES) composed of proline (HBA), choline chloride (HBA), glycerol (HBD) (1:1:6) was designed and utilized for the green synthesis of tetrahydrobenzo[b]pyrans.
Fatemeh Pirani, Hossein Eshghi
doaj   +1 more source

Separation and preconcentration of trivalent chromium in environmental waters by using deep eutectic solvent with ultrasound-assisted based dispersive liquid-liquid microextraction method

open access: yes, 2019
An innovative deep eutectic solvent with ultrasound-assisted based dispersive liquid-liquid microextraction method was first time develop for separation and preconcentration of trivalent chromium in environmental water samples. The 'deep eutectic solvent
Afridi, Hassan I.   +6 more
core   +1 more source

Chemical engineering as an essential element of industrial biotechnology in Mexico: New aims in research and university education

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract On the centennial of higher education in Chemical Engineering in Mexico, it is pertinent to revisit the key stages that have contributed to its consolidation as a vital discipline for the nation's scientific and technological advancement. Although the initial mission of chemical engineering education was primarily oriented toward the training ...
Agustín López Munguía   +3 more
wiley   +1 more source

Antisolvent crystallization of lithium hydroxide monohydrate: Significant factors and kinetics analysis

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Crystallization is the final stage in lithium hydroxide monohydrate (LiOH · H2O) production, and antisolvent crystallization offers a lower‐energy route compared with evaporative methods. In this study, we investigated bench‐scale ethanol‐based antisolvent crystallization of LiOH · H2O, and identified the significant impact parameter via a ...
Chentao He, Liuyin Xia
wiley   +1 more source

Phase Diagrams of Carbonate Materials at High Pressures, with Implications for Melting and Carbon Cycling in the Deep Earth

open access: yesGeophysical Monograph Series, Page 137-165., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov   +3 more
wiley  

+4 more sources

Xylose Acetals ‐ a New Class of Sustainable Solvents and Their Application in Enzymatic Polycondensation

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
Novel organic solvents with an unmodified carbohydrate core were synthesised both from D‐xylose and directly from biomass and were successfully used as reaction media for lipase biocatalysts to synthesise aliphatic and aromatic polyesters. Abstract The use of organic solvents in academic research and industry applications is facing increasing ...
Anastasia O. Komarova   +8 more
wiley   +1 more source

Redox Biocatalysis in Lidocaine‐Based Hydrophobic Deep Eutectic Solvents: Non‐Conventional Media Outperform Aqueous Conditions

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
Two hydrophobic DESs, lidocaine/oleic acid and lidocaine/decanoic acid, were utilized as reaction media that were enzyme‐compatible and highly substrate‐solubilizer for carbonyl reduction catalyzed by horse liver alcohol dehydrogenase, focusing on the effect of water contents and on maximizing substrate loadings, which showcases for the first time the ...
Ningning Zhang   +6 more
wiley   +1 more source

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