Results 11 to 20 of about 127,650 (334)

Organocatalytic atroposelective synthesis of axially chiral styrenes

open access: yesNature Communications, 2017
Many methods exist for the atroposelective synthesis of axially chiral biaryls, but axially chiral styrenes are much less explored. Here the authors report an organocatalytic procedure for the synthesis of configurationally stable, axially chiral ...
Sheng-Cai Zheng   +5 more
doaj   +2 more sources

Organophotocatalytic [2+2] Cycloaddition of Electron‐Deficient Styrenes

open access: yesChemistry, 2022
A visible‐light organophotocatalytic [2+2] cycloaddition of electron‐deficient styrenes is described. Photocatalytic [2+2] cycloadditions are typically performed with electron‐rich styrene derivatives or α,β‐unsaturated carbonyl compounds, and with ...
Maxim Golfmann   +4 more
semanticscholar   +1 more source

Visible-light promoted atom transfer radical addition-elimination (ATRE) reaction for the synthesis of fluoroalkylated alkenes using DMA as electron-donor [PDF]

open access: yes, 2020
Here, we describe a mild, catalyst-free and operationally-simple strategy for the direct fluoroalkylation of olefins driven by the photochemical activity of an electron donor-acceptor (EDA) complex between DMA and fluoroalkyl iodides.
Gu, Jiwei   +5 more
core   +2 more sources

From‐Neutral‐to‐Neutral Reductive Radical Coupling of Non‐Activated Alcohols and Styrenes

open access: yesChemistryEurope, 2023
A reductive radical coupling reaction between non‐activated aliphatic alcohols and styrenes has been discovered through the use of low‐valent Ti‐mediated C−O bond homolysis.
Dr. Takuya Suga   +2 more
doaj   +1 more source

Visible-Light Decatungstate/Disulfide Dual Catalysis for the Hydro-Functionalization of Styrenes.

open access: yesOrganic Letters, 2021
We describe an efficient photoredox system, relying on decatungstate/disulfide catalysts, for the hydrofunctionalization of styrenes. In this methodology the use of disulfide as a cocatalyst was shown to be crucial for the reaction efficiency.
Alexis Prieto, M. Taillefer
semanticscholar   +1 more source

Catalytic direct hydrocarboxylation of styrenes with CO2 and H2

open access: yesNature Communications, 2022
Hydrocarboxylation of olefins with CO2 provides a useful approach for the synthesis of aliphatic carboxylic acids. Here, the authors report a rhodium-catalysed hydrocarboxylation of styrenes with CO2, using hydrogen as the terminal reductant.
Yushu Jin   +4 more
doaj   +1 more source

Selective Dealkenylative Functionalization of Styrenes via C-C Bond Cleavage

open access: yesResearch, 2020
As a readily available feedstock, styrene with about 25 million tons of global annual production serves as an important building block and organic synthon for the synthesis of fine chemicals, polystyrene plastics, and elastomers.
Jianzhong Liu   +5 more
doaj   +1 more source

Anti-Markovnikov hydro(amino)alkylation of vinylarenes via photoredox catalysis

open access: yesNature Communications, 2021
Many useful chemical scaffolds include carbon or nitrogen substitutions at two or three atoms away from benzene. Here, the authors show a unified hydroalkylation and hydroaminoalkylation protocol to access these structures via a regioselective ...
Zhao Wu, Samuel N. Gockel, Kami L. Hull
doaj   +1 more source

Modeling Styrene−Styrene Interactions

open access: yesThe Journal of Physical Chemistry A, 2005
This study is the first step in the systematic investigation of substituted (carboxyl) polystyrene nanoparticles. Understanding the fundamental interactions between the p-carboxyl styrene monomers, where an ethyl group is used instead of a vinyl group (referenced, for convenience, as "p-carboxyl styrene"), provides the basic information needed to ...
Adamovic, Ivana   +3 more
openaire   +4 more sources

Catalytic and mechanistic studies into the epoxidation of styrenes using manganese complexes of structurally similar polyamine ligands [PDF]

open access: yes, 2014
The synthesis and catalytic activity of manganese(ii) complexes of two polyamine ligands is reported which highlights how a small structural change in the ligand affects the overall catalytic behaviour.
Al-Safadi, R   +5 more
core   +1 more source

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