Results 11 to 20 of about 67,475 (292)

Enantioselective Synthesis of 2,2-Disubstituted Terminal Epoxides via Catalytic Asymmetric Corey-Chaykovsky Epoxidation of Ketones [PDF]

open access: goldMolecules, 2012
Catalytic asymmetric Corey-Chaykovsky epoxidation of various ketones with dimethyloxosulfonium methylide using a heterobimetallic La-Li3-BINOL complex (LLB) is described.
Shigeki Matsunaga   +3 more
doaj   +2 more sources

Trichloroisocyanuric Acid: An Alternate Green Route for the Transformation of Alkenes into Epoxides [PDF]

open access: goldJournal of the Brazilian Chemical Society, 2002
The preparation of epoxides is efficiently achieved in mild conditions by reaction of alkenes with trichloroisocyanuric acid in aqueous acetone followed by treatment of the resulting chlorohydrin with aqueous KOH in ether / pentane.
Wengert Mira   +2 more
doaj   +2 more sources

Computational insights into the spontaneity of epoxide formation from halohydrins and other mechanistic details of Williamson’s ether synthesis

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2023
The reaction mechanism of several Williamson‟s ether syntheses have been studied using density functional theory with triple-ζ basis sets. These computations show that the synthesis of geometrically-strained epoxide from deprotonated halohydrins is due ...
Pedro J. Silva
doaj   +1 more source

Substituted Epoxides by Lithiation of Terminal Epoxides [PDF]

open access: yesOrganic Letters, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Hodgson, D, Reynolds, N, Coote, S
openaire   +2 more sources

Deep Eutectic Solvents as Catalysts for Cyclic Carbonates Synthesis from CO2 and Epoxides

open access: yesMolecules, 2022
In recent years, the chemical industry has put emphasis on designing or modifying chemical processes that would increasingly meet the requirements of the adopted proecological sustainable development strategy and the principles of green chemistry.
Dorota Mańka, Agnieszka Siewniak
doaj   +1 more source

In situ epoxide generation by dimethyldioxirane oxidation and the use of epichlorohydrin in the flow synthesis of a library of β-amino alcohols [PDF]

open access: yesRoyal Society Open Science, 2018
The flow coupling of epichlorohydrin with substituted phenols, while efficient, limits the nature of the epoxide available for the development of focused libraries of β-amino alcohols.
Peter J. Cossar   +3 more
doaj   +1 more source

Monolayer autoxidation of arachidonic acid to epoxyeicosatrienoic acids as a model of their potential formation in cell membranes

open access: yesJournal of Lipid Research, 2022
In light of the importance of epoxyeicosatrienoic acids (EETs) in mammalian pathophysiology, a nonenzymatic route that might form these monoepoxides in cells is of significant interest.
James A. Weiny   +4 more
doaj   +1 more source

Synthesis of Pluri-Functional Amine Hardeners from Bio-Based Aromatic Aldehydes for Epoxy Amine Thermosets

open access: yesMolecules, 2019
Most of the current amine hardeners are petro-sourced and only a few studies have focused on the research of bio-based substitutes. Hence, in an eco-friendly context, our team proposed the design of bio-based amine monomers with aromatic structures. This
Anne-Sophie Mora   +4 more
doaj   +1 more source

Si-Imidazole-HSO4 Functionalized Magnetic Fe3O4 Nanoparticles as an Efficient and Reusable Catalyst for the Regioselective Ring Opening of Epoxides in Water [PDF]

open access: yesNanochemistry Research, 2016
An efficient and simple method for the preparation of Si-Imidazole-HSO4 functionalized magnetic Fe3O4 nanoparticles (Si-Im-HSO4 MNPs) and used as an efficient and reusable magnetic catalysts for the regioselective ring opening of epoxides under green ...
Eshagh Rezaee Nezhad   +1 more
doaj   +1 more source

The Ability of NCP@POCl2-x Core-Shell Magnetic Nano-Catalyst for Simultaneous Conversion of Epoxides into Cyanohydrin and α,β-Unsaturated Carboxylic Acid [PDF]

open access: yesJournal of Optoelectronical Nanostructures
: This paper presents a new environmental, and remarkably efficient heterogeneous magnetic nanocomposite, NCP@POCl2-x (Fe3O4@SiO2@CS@POCl2-x), designed for the regioselective production of cyanide compounds from epoxides using NaCN, subsequently ...
Farzaneh Ebrahimzadeh
doaj   +1 more source

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