Results 11 to 20 of about 3,323 (237)

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

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

Dipolar Cycloaddition Reactions with Quinazolinones: A New Route for the Synthesis of Several Annelated Pyrrolo- and Pyridazinoquinazoline Derivatives

open access: yesMolecules, 2003
The novel 2-aryl-3a,4,12,12a-tetrahydropyrrolo[3',4':4,3]-pyridazino[6,1-b]-quinazoline-1,3,6-triones (6a–d), 2-aryl-10-oxopyridazino[6,1-b]-quinazoline-3-thio-carboxamides (10a–d) and 2-aryl-3-nitro-1,2,3,4-tetrahydro-pyridazino[6,1-b ...
Hatem M. Gaber, Sami S. Ghabrial
doaj   +1 more source

Titania-Catalyzed H2O2 Thermal Oxidation of Styrenes to Aldehydes

open access: yesMolecules, 2019
We investigated the selective oxidation of styrenes to benzaldehydes by using a non-irradiated TiO2−H2O2 catalytic system. The oxidation promotes multi-step reactions from styrenes, including the cleavage of a C=C double bond and the addition of an
Satoru Ito   +6 more
doaj   +1 more source

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   +1 more source

Hydroxy- and Hydro-Perfluoroalkylation of Styrenes by Controlling the Quenching Cycle of Eosin Y

open access: yesMolecules, 2023
Fluoroalkyl compounds are widely used, underscoring a pressing need for the development of methods for their synthesis. However, reports on perfluoroalkylation to styrenes have been sparse.
Haruko Shibata   +4 more
doaj   +1 more source

Ketones from aldehydes via alkyl C(sp3)−H functionalization under photoredox cooperative NHC/palladium catalysis

open access: yesNature Communications, 2023
Direct synthesis of ketones from aldehydes features high atom- and step-economy. Yet, the coupling of aldehydes with unactivated alkyl C(sp3)-H remains challenging.
Hai-Ying Wang   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy