Results 21 to 30 of about 121,502 (357)

Biotransformation of ent-beyerenes with mucor plumbeus [PDF]

open access: yes, 2013
Indexación: Web of Science; Scielo.ABSTRACT The microbiological transformation of ent-beyer-15-en-18-ol 1 and ent-beyer-15-en-19-ol 2, using Mucorplumbeus, resulted in hydroxylated products.
Chamy, María Cristina   +3 more
core   +1 more source

Gold Nanoparticle-Catalyzed Environmentally Benign Deoxygenation of Epoxides to Alkenes

open access: yesMolecules, 2011
We have developed a highly efficient and green catalytic deoxygenation of epoxides to alkenes using gold nanoparticles (NPs) supported on hydrotalcite [HT: Mg6Al2CO3(OH)16] (Au/HT) with alcohols, CO/H2O or H2 as the reducing reagent.
Kiyotomi Kaneda   +4 more
doaj   +1 more source

Organocatalyzed enantioselective desymmetrization of aziridines and epoxides

open access: yesBeilstein Journal of Organic Chemistry, 2013
Enantioselective desymmetrization of meso-aziridines and meso-epoxides with various nucleophiles by organocatalysis has emerged as a cutting-edge approach in recent years.
Ping-An Wang
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

Kinetics and Products of the Acid-Catalyzed Ring-Opening of Atmospherically Relevant Butyl Epoxy Alcohols [PDF]

open access: yes, 2010
Epoxydiols are produced in the gas phase from the photo-oxidation of isoprene in the absence of significant mixing ratios of nitrogen oxides (NO_x). The reactive uptake of these compounds onto acidic aerosols has been shown to produce secondary organic ...
Eddingsaas, Nathan C.   +2 more
core   +2 more sources

Biocatalytic Conversion of Epoxides [PDF]

open access: yesChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Erik J. de Vries, Dick B. Janssen
openaire   +4 more sources

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

Total Synthesis of Resveratrone and iso‐Resveratrone

open access: yesChemistryOpen, 2022
The first total synthesis of resveratrone and iso‐resveratrone based on an epoxide olefination approach is described. The pivotal reaction proceeds by insertion of the lithiated epoxide into a boronic ester and subsequent syn‐elimination.
Stefan Fritsch   +5 more
doaj   +1 more source

Structural and Electronic Properties of Oxidized Graphene [PDF]

open access: yesPhysical Review Letters 103, 086802 (2009)., 2009
We have systematically investigated the effect of oxidation on the structural and electronic properties of graphene based on first-principles calculations. Energetically favorable atomic configurations and building blocks are identified, which contain epoxide and hydroxyl groups in close proximity with each other.
arxiv   +1 more source

One-pot synthesis of epoxides from benzyl alcohols and aldehydes

open access: yesBeilstein Journal of Organic Chemistry, 2018
A one-pot synthesis of epoxides from commercially available benzyl alcohols and aldehydes is described. The reaction proceeds through in situ generation of sulfonium salts from benzyl alcohols and their subsequent deprotonation for use in Corey ...
Edwin Alfonzo   +2 more
doaj   +1 more source

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