Results 21 to 30 of about 514,078 (293)
Synthesis of Bio-Derived Cyclic Carbonates from Renewable Resources
, 2019 The coupling reaction of carbon dioxide and terminal, internal, and highly substituted epoxides derived from renewable resources such as furfural, limonene, carvone, carvyl acetate, terpinen-4-ol, or ionone leads to the synthesis of new bioderived cyclic
Javier Martínez (1779514) +15 more
core +4 more sources
Deconstructive fluorination of cyclic amines by carbon-carbon cleavage [PDF]
Science, 2018 A silver cleaver splits cyclic amines Carbon-carbon single bonds are fairly unreactive when they are not strained in a tight ring. Roque et al. now report that a silver salt can cleave C–C bonds in unstrained cyclic amines such as pyrrolidines and piperidines. Paired with an
Jose B. Roque +3 more
openaire +4 more sources
Direct Electrosynthesis of Organic Carbonates from CO2 with Alcohols Under Mild Condition
International Journal of Electrochemical Science, 2012 Electrosynthesis of organic carbonates from CO2 with alcohols has been carried out directly under galvanostatic condition at room temperature and normal pressure in DMF/MeCN without any additional catalyst.
La-Xia Wu +7 more
doaj +1 more source
, 2016 Monocyclic rings with even carbon atoms, from 6 to 24, were studied using five restricted Hartree–Fock computational refinements (STO-3G, 3-21G, 6-31G*, RI-MP2/6-31G*, and RI-MP2/6-311G*) in order to identify stable polyyne rings. Polyyne rings with 24 carbon atoms were revealed to be stable, and a crossed cyclic polyyne, with 4 such rings, was ...
Jäntschi, Lorentz +2 more
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Green Chemical Engineering, 2022 Novel mono- and bimetallic scorpionate aluminum compounds have been designed and characterized by spectroscopic methods. These organometallics complexes, in combination with tetrabutylammonium bromide as cocatalyst, displayed good catalytic activity for ...
Felipe de la Cruz-Martínez +2 more
doaj +1 more source
, 2013 Lignin-Based Green Catalyst for the Chemical Fixation of Carbon Dioxide with Epoxides To Form Cyclic Carbonates under Solvent-Free ...
Liu, Enhui +5 more
core +1 more source
Dialkyl Carbonates in the Green Synthesis of Heterocycles
Frontiers in Chemistry, 2019 This review focuses on the use of dialkyl carbonates (DACs) as green reagents and solvents for the synthesis of several 5- and 6-membered heterocycles including: tetrahydrofuran and furan systems, pyrrolidines, indolines, isoindolines, 1,4-dioxanes ...
Pietro Tundo +3 more
doaj +1 more source
Activated lipidic cyclic carbonates for non-isocyanate polyurethane synthesis
, 2016 International audienceActivated 5-membered cyclic carbonates were prepared from glycerol and fatty acid derivatives. Ester and ether moieties were introduced in the beta position to the cyclic carbonate, in order to enhance its reactivity towards amines.
WIROTIUS, Anne-Laure +5 more
core +1 more source
Journal of CO2 Utilization, 2023 Carbon dioxide (CO2) cycloaddition with epoxide can yield value-added cyclic carbonates with 100 % atom efficiency. Moreover, zeolitic imidazolate frameworks (ZIFs) have emerged as promising catalysts for this reaction as their basic and acidic sites can
Kyung-Ryul Oh +7 more
doaj +1 more source
Enzymatic Hydrolysis of Organic Cyclic Carbonates [PDF]
Journal of Biological Chemistry, 1998 Ethylene carbonate, a cyclic organic carbonate widely used industrially, is toxic when metabolically converted to ethylene glycol. A rat liver enzyme active in catalyzing the ring opening has been purified to electrophoretic homogeneity and found to be active in the hydrolysis of ethylene, vinylene, and propylene carbonates to CO2 and the respective ...
Y L, Yang, S G, Ramaswamy, W B, Jakoby
openaire +2 more sources