Results 121 to 130 of about 776,948 (400)

Water‐Mediated 1,7‐Palladium Aryl‐to‐Aryl Migration in an Unusual Aryne Trimerization Enables the Synthesis of Multihelicenes with Profoundly Hindered Stereogenic Axes

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
In the presence of a Pd0 catalyst, large π‐extended arynes trimerize in an unusual manner to forge extremely compact and strained chiral benzenoids. This new trimerization reaction involves a 1,7‐Pd isomerization, a rare and poorly understood process that is elucidated.
Albert Artigas   +6 more
wiley   +1 more source

Electrospray mass spectrometry analysis of blastocoel fluid as a potential tool for bovine embryo selection. [PDF]

open access: yesJ Assist Reprod Genet, 2021
de Oliveira Fernandes G   +4 more
europepmc   +1 more source

Tetramolecular G-quadruplex formation pathways studied by electrospray mass spectrometry

open access: yesNucleic Acids Research, 2010
Electrospray mass spectrometry was used to investigate the mechanism of tetramolecular G-quadruplex formation by the DNA oligonucleotide dTG5T, in ammonium acetate.
F. Rosu   +3 more
semanticscholar   +1 more source

Rhodium‐Catalyzed Oxidative CH o‐Arylation of s‐Aryltetrazines with Aryl Boronic Acids: One‐Step Selective Access to T‐Shaped and Z‐Shaped Polyaromatics

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
A one‐step regioselective access to T‐Shaped and Z‐Shaped polyaromatics s‐tetrazines by a rhodium‐catalyzed oxidative CH o‐functionalization is reported. Electron‐rich aryl coupling partners display a higher reactivity than electron‐poor aryl, and allow the formation of poly(hetero)aromatic derivatives while avoiding 1,4‐azaphilic addition of the ...
Oumaima Abidi   +6 more
wiley   +1 more source

Naphthalimide Derivatives as Film‐Based Fluorescent Sensors for Rapid Detection of Illicit Drugs

open access: yesAdvanced Sensor Research, EarlyView.
Four novel 1,8‐naphthalimide (NI) derivatives for the detection of illicit drugs with different substituents at the 4‐position are reported. Their contrasting fluorescence responses enables five illicit drugs to be distinguished from interferents with a mean classification accuracy of 81%.
Ming Chen   +7 more
wiley   +1 more source

DMS as an orthogonal separation to LC/ESI/MS/MS for quantifying isomeric cerebrosides in plasma and cerebrospinal fluid[S]

open access: yesJournal of Lipid Research, 2019
Cerebrosides, including glucosylceramides (GlcCers) and galactosylceramides (GalCers), are important membrane components of animal cells with deficiencies resulting in devastating lysosomal storage disorders. Their quantification is essential for disease
Hongbin Xu   +10 more
doaj   +1 more source

Identification of a Widespread Palmitoylethanolamide Contamination in Standard Laboratory Glassware. [PDF]

open access: yes, 2017
Introduction: Fatty acid ethanolamides (FAEs) are a family of lipid mediators that participate in a host of biological functions. Procedures for the quantitative analysis of FAEs include organic solvent extraction from biological matrices (e.g., blood ...
Angelini, Roberto   +3 more
core  

Home - About - Disclaimer - Privacy