Results 11 to 20 of about 145,591 (257)

Taint and odour phenomena in carton-board packaging systems [PDF]

open access: yes, 1998
Unsaturated lipids exist in carton-board and can be the precursors of odorous compounds. Two unsaturated lipids that can be present are oleic acid (cis 9-octadecenoic acid) and linoleic acid (cis, cis 9,12-octadecadienoic acid).
Pugh, Simon
core   +6 more sources

Aldehydes, Aldehyde Metabolism, and the ALDH2 Consortium

open access: yesBiomolecules, 2022
The discovery of aldehydes dates back to 1774 when Carl Wilhelm Scheele synthesized acetaldehyde [...]
Freeborn Rwere   +3 more
openaire   +5 more sources

Catalytic Deracemization of α-Branched Aldehydes via Visible Light Promoted E/Z Isomerization of Enamine Intermediate [PDF]

open access: yes, 2021
Catalytic deracemization of α-branched aldehydes represents an unmet challenge with fundamental importance in carbonyl chemistry. In this work, we report a photochemical E/Z isomerization strategy for the deracemization of α-branched aldehydes by using ...
Mouxin , Huang   +3 more
core   +2 more sources

Nickel-Catalyzed Defluorinative Coupling of Aliphatic Aldehydes with Trifluoromethyl Styrenes [PDF]

open access: yes, 2021
A simple procedure is reported for the nickel-catalyzed defluorinative alkylation of unactivated aliphatic aldehydes. The process involves the catalytic reductive union of trifluoromethyl styrenes with aldehydes using a nickel complex of a 6,6 ...
John, Montgomery, Jichao, Xiao
core   +1 more source

n-Aldehydes ( C 6 - C 10 ) in snow samples collected at the high alpine research station Jungfraujoch during CLACE 5 [PDF]

open access: yes, 2009
Samples of freshly fallen snow were collected at the high alpine research station Jungfraujoch, Switzerland, during the Cloud and Aerosol Characterization Experiments (CLACE) 5 in February and March 2006.
Starokozhev, Elena   +4 more
core   +1 more source

Chromatographic methods and sample pretreatment techniques for aldehydes determination in biological, food, and environmental samples [PDF]

open access: yes, 2019
Aldehydes are very reactive carbonyl compounds that are widespread naturally. Aldehydes can be produced in vivo by oxidative reactions and are able to disturb biological functions through binding and modifying biomolecules.
Kuroda, Naotaka   +2 more
core   +1 more source

Peptide catalyzed conjugate addition reactions of aldehydes to nitroolefins [PDF]

open access: yes, 2013
In this thesis mechanistic investigations into the peptide catalyzed conjugate addition reaction between aldehydes and nitroolefins are described.
Duschmalé, Jörg
core   +1 more source

Transient Directing Group enabled C3-(sp2)-H alkenylation of Five Membered Heterocyclic Aldehydes: An Easy Access to Mechanochromic Luminogens [PDF]

open access: yes, 2023
The palladium (II) catalyzed direct C3-(sp2)-H alkenylation of five membered heterocyclic aldehydes has been developed using 3-aminobutanoic acid as a catalytic transient directing group.
Javed Y., Shaikh   +4 more
core   +2 more sources

Branched chain aldehydes: production and breakdown pathways and relevance for flavour in foods [PDF]

open access: yes, 2009
Branched aldehydes, such as 2-methyl propanal and 2- and 3-methyl butanal, are important flavour compounds in many food products, both fermented and non-fermented (heat-treated) products. The production and degradation of these aldehydes from amino acids
Engels, W.J.M., Smit, B.A., Smit, G.
core   +1 more source

Interaction of Amines with Ketone Aldehydes and Unsaturated Aldehydes [PDF]

open access: yesProceedings of the National Academy of Sciences, 1973
The optical changes occurring during the interaction of amines with ketone aldehydes or unsaturated aldehydes are accompanied by strong electron spin resonance signals, and can thus be explained as due to the transfer of one whole electron in the ground state.
H, Kon, A, Szent-Györgyi
openaire   +2 more sources

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