Results 31 to 40 of about 138,420 (314)

The Role of Lipoxidation in the Pathogenesis of Diabetic Retinopathy

open access: yesFrontiers in Endocrinology, 2021
Lipids can undergo modification as a result of interaction with reactive oxygen species (ROS). For example, lipid peroxidation results in the production of a wide variety of highly reactive aldehyde species which can drive a range of disease-relevant ...
Josy Augustine   +6 more
doaj   +1 more source

Decarbonylative Olefination of Aldehydes to Alkenes [PDF]

open access: yes, 2019
New atom-economical alternatives to Wittig chemistry are needed construct olefins from carbonyl complexes, but none have been developed to-date. Here we report an atom-economical olefination of carbonyls via aldol-decarbonylative coupling of aldehydes ...
Adelina, Voutchkova-Kostal   +4 more
core   +1 more source

Compostos carbonílicos atmosféricos: fontes, reatividade, níveis de concentração e efeitos toxicológicos Atmospheric carbonyl compounds: sources, reactivity, concentration levels and toxicologic effects

open access: yesQuímica Nova, 2002
In the last three decades carbonyl compounds, aldehydes and ketones, have received a great deal of attention due to their strong influence on photochemical smog formation and their recognized adverse human health effects.
Marta Valéria Almeida Santana de Andrade   +3 more
doaj   +1 more source

Acetic acid-promoted condensation of o-phenylenediamine with aldehydes into 2-aryl-1-(arylmethyl)-1H-benzimidazoles under microwave irradiation [PDF]

open access: yesJournal of the Serbian Chemical Society, 2010
An efficient and simple procedure was developed for the green synthesis of various 2-aryl-1-(arylmethyl)-1H-benzimidazoles in high yields by acetic acid-promoted condensation of o-phenylenediamine with aldehydes in air under microwave irradiation and ...
DAVOOD AZARIF   +4 more
doaj  

Efficient Approach to Carbinol Derivatives through Palladium-Catalyzed Base-Free Addition of Aryltriolborates to Aldehydes

open access: yesMolecules, 2017
Palladium-catalyzed base-free addition of aryltriolborates to aldehydes has been developed, leading to a wide range of carbinol derivatives in good to excellent yields.
Kun Hu   +6 more
doaj   +1 more source

Remarkable Diastereoselectivity in the Addition of Allylic and Unsaturated Diorganozinc Reagents to β-(N,N-Dialkylamino)-aldehydes [PDF]

open access: yes, 2016
1,3-Anti amino alcohols 5a−18a are obtained with high diastereoselectivity by use of diorganozinc reagents in additions to amino aldehydes 2a and 2b. The corresponding Grignard reagents exhibit low to modest diastereoselectivity.
Denis Kozhinov (3031350)   +2 more
core   +1 more source

Scientific Opinion on Flavouring Group Evaluation 06, Revision 4 (FGE.06Rev4): Straight- and branched-chain aliphatic unsaturated primary alcohols, aldehydes, carboxylic acids and esters from chemical groups 1, 3 and 4 [PDF]

open access: yesEFSA Journal, 2013
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 56 flavouring substances in the Flavouring Group Evaluation 6, Revision 4, using the Procedure in Commission ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Study of the influence of fermentation conditions on the content of aroma-forming substances in young red wines

open access: yesНовые технологии, 2023
One of the main requirements for young wines is preservation the qualities of the grapes, including the bright varietal aroma characteristic of essential oils concentrated in the grape skins.
L. V. Gnetko   +3 more
doaj   +1 more source

Synthesis and Biological Evaluation of Hydrazone Derivatives as Antifungal Agents

open access: yesMolecules, 2015
Emerging yeasts are among the most prevalent causes of systemic infections with high mortality rates and there is an urgent need to develop specific, effective and non-toxic antifungal agents to respond to this issue.
Bruna B. Casanova   +7 more
doaj   +1 more source

Enantioselective Organocatalyzed Michael Addition of Isobutyraldehyde to Maleimides in Aqueous Media

open access: yesMolecules, 2022
Thiourea was introduced into (R,R)-1,2-diphenylethylenediamine as an organocatalyst to promote the reaction between isobutyraldehydes and maleimides. Enantioselective Michael addition reaction was carried out as an eco-friendly method using water as the ...
Jae Ho Shim   +3 more
doaj   +1 more source

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