Results 11 to 20 of about 1,354 (186)

Iron-mediated reactions of gem-dihaloalkanes with α,β-unsaturated carbonyl compounds [PDF]

Chem Sci
The ability to harness divergent reactivity and selectively dictate product outcomes from simple precursors has been a longstanding challenge in organic chemistry, especially in radical chemistry.
Guangshen Wang, Jing Yao, Jianwei Liu, Tian-Tian Zhang, Xue Cheng, Li Li, Man‐Yi Han, Baosheng Li   +7 more
semanticscholar   +2 more sources

Nrf2–Keap1 Axis Modulation by Phytofabricated Metal Oxide Nanoparticles in Mesenchymal Stem Cell Lineage Bias [PDF]

Journal of Biochemical and Molecular Toxicology, Volume 40, Issue 9, September 2026.
Phytofabricated metal oxide nanoparticles may activate the Nrf2–Keap1 axis through a dual‐stimulus mechanism, coupling nanoparticle‐derived ROS with phytochemical‐mediated Keap1 modification, steering mesenchymal stem cells toward osteogenic commitment — a mechanistic framework this review consolidates from current evidence.
Muhammad Irfan, Muhammad Taha, Syed Muhammad Faizan Asghar, Muhammad Raza   +3 more
wiley   +2 more sources

A practical method for the aziridination of α,β-unsaturated carbonyl compounds with a simple carbamate utilizing sodium hypochlorite pentahydrate

RSC Advances, 2021
The efficient formation of tert-butyl N-chloro-N-sodio-carbamate by the reaction of simple tert-butyl carbamate with sodium hypochlorite pentahydrate (NaOCl·5H2O) would be a practical and green method for the aziridination of α,β-unsaturated carbonyl ...
Takehiro Umeda, S. Minakata
semanticscholar   +1 more source

Revisiting Aromatic Claisen Rearrangement Using Unstable Aryl Sulfonium/Iodonium Species: The Strategy of Breaking Up the Whole into Parts

, 2022
ConspectusSince Ludwig Claisen’s discovery of the sigmatropic rearrangement of allyl aryl ethers in 1912, aromatic Claisen rearrangement has continuously attracted the attention of both experimental and theoretical chemists.
Bo Peng (273834), Yuchen Liang (8596404)
core   +1 more source

Scientific Opinion on Flavouring Group Evaluation 5, Revision 3 (FGE.05Rev3): Branched‐ and straight‐chain unsaturated aldehydes, dienals, unsaturated and saturated carboxylic acids and related esters with saturated and unsaturated aliphatic alcohols and a phenylacetic acid related ester from chemical groups 1, 2, 3, 5 and 15

EFSA Journal, 2019
The EFSA Panel on Food Additives and Flavourings (FAF) was requested to evaluate 54 flavouring substances attributed to the Flavouring Group Evaluation 05 (FGE.05), using the Procedure as referred to in the Commission Regulation (EC) No 1565/2000.
EFSA Food Additives and Flavourings (FAF), Maged Younes, Gabriele Aquilina, Laurence Castle, Karl‐Heinz Engel, Paul Fowler, Maria Jose Frutos Fernandez, Peter Fürst, Ursula Gundert‐Remy, Rainer Gürtler, Trine Husøy, Peter Moldeus, Agneta Oskarsson, Romina Shah, Ine Waalkens‐Berendsen, Detlef Wölfle, Romualdo Benigni, Claudia Bolognesi, Kevin Chipman, Eugenia Cordelli, Gisela Degen, Daniel Marzin, Camilla Svendsen, Maria Carfì, Carla Martino, Giorgia Vianello, Wim Mennes   +26 more
doaj   +1 more source

Scientific Opinion on Flavouring Group Evaluation 70, Revision 1 (FGE.70Rev1): consideration of aliphatic, linear, α,β‐unsaturated, di‐ and trienals and related alcohols, acids and esters evaluated by JECFA (61st‐68th‐69th meeting)

EFSA Journal, 2019
The EFSA Panel on Food Additives and Flavourings was requested to evaluate 29 flavouring substances attributed to the Flavouring Group Evaluation 70 (FGE.70), using the Procedure in Commission Regulation (EC) No 1565/2000.
EFSA Panel on Food Additives and Flavourings (FAF), Maged Younes, Gabriele Aquilina, Laurence Castle, Karl‐Heinz Engel, Paul Fowler, Maria Jose Frutos Fernandez, Peter Fürst, Ursula Gundert‐Remy, Rainer Gürtler, Trine Husøy, Peter Moldeus, Agneta Oskarsson, Romina Shah, Ine Waalkens‐Berendsen, Detlef Wölfle, Romualdo Benigni, Claudia Bolognesi, Kevin Chipman, Eugenia Cordelli, Gisela Degen, Daniel Marzin, Camilla Svendsen, Maria Carfì, Carla Martino, Giorgia Vianello, Wim Mennes   +26 more
doaj   +1 more source

Organocatalytic Asymmetric Synthesis of Chiral Dioxazinanes and Dioxazepanes with in Situ Generated Nitrones via a Tandem Reaction Pathway Using a Cooperative Cation Binding Catalyst.

Journal of the American Chemical Society, 2016
Heterocyclic skeletons play major roles in pharmaceuticals and biological processes. Cycloaddition reactions are most suitable synthetic tools to efficiently construct chemically diverse sets of heterocycles with great structural complexity owing to the ...
Yidong Liu, Jun Ao, Sushovan Paladhi, C. Song, Hai-Long Yan   +4 more
semanticscholar   +1 more source

Radical oxidation of methyl vinyl ketone and methacrolein in aqueous droplets: Characterization of organosulfates and atmospheric implications.

Chemosphere, 2019
In-cloud processing of volatile organic compounds is one of the significant routes leading to secondary organic aerosol (SOA) in the lower troposphere. In this study, we demonstrate that two atmospherically relevant α,β-unsaturated carbonyls, i.e., but-3-
P. Wach, G. Spólnik, K. Rudzinski, K. Skotak, M. Claeys, W. Danikiewicz, R. Szmigielski   +6 more
semanticscholar   +1 more source

Cobalt‐Catalyzed C─N Bond Formation via Metal‐Hydride Hydrogen Atom Transfer (MHAT)

Angewandte Chemie, EarlyView.
Cobalt‐catalyzed metal‐hydride hydrogen atom transfer (Co‐MHAT) converts simple alkenes into C─N bonds under mild, near‐neutral conditions. A shared Co─H‐initiated radical/organocobalt intermediate is channeled into radical trapping, radical‐polar crossover, or radical ligand transfer, unifying hydroamination, hydroazidation, hydroamidation, and remote
Arman Khosravi, Ming‐Yu Ngai
wiley   +2 more sources

Gas-Phase and Condensed-Phase Studies of Small Reactive Intermediates [PDF]

, 2018
Nitriles are an integral functional group in many chemical industries. A new methodology for the dehydration of amides to nitriles has been developed using a palladium catalyst.
Haskins, Chris William
core   +2 more sources