Results 71 to 80 of about 4,382 (191)

Sulfonium Salts as Leaving Groups for Aromatic Labelling of Drug-like Small Molecules with Fluorine-18. [PDF]

open access: yes
Positron emission tomography (PET) is unique in that it allows quantification of biochemical processes in vivo, but difficulties with preparing suitably labelled radiotracers limit its scientific and diagnostic applications.
Cybulska, K   +6 more
core  

Mechanochemical Approach for Metal‐Free Regioselective C5‐Sulfenylation of Imidazo[2,1‐b]Thiazoles

open access: yesChemSusChem, EarlyView.
This study presents a mechanochemical approach for the metal‐free, regioselective C5‐sulfenylation of imidazo[2,1‐b]thiazoles using bis(trifluoroacetoxy)iodo]benzene and aryl methyl sulfides. The method, performed under solvent‐free ball‐milling conditions, provides an efficient, environmentally friendly alternative to conventional synthesis, achieving
Xinya Liu   +6 more
wiley   +1 more source

Experimental realization of catalytic CH_4 hydroxylation predicted for an iridium NNC pincer complex, demonstrating thermal, protic, and oxidant stability [PDF]

open access: yes, 2009
A discrete, air, protic, and thermally stable (NNC)Ir(III) pincer complex was synthesized that catalytically activates the CH bond of methane in trifluoroacetic acid; functionalization using NaIO_4 and KIO_3 gives the oxy ...
Ess, Daniel H.   +6 more
core   +1 more source

Molecular iodine‐mediated functionalization of α‐Carbonyl Sulfoxonium ylides with Thiocyanates, Xanthates and Dithiocarbamates

open access: yesEuropean Journal of Organic Chemistry, Accepted Article.
In this work, we present a straightforward, rapid, and cost‐effective protocol for synthesizing three distinct classes of α‐functionalized sulfoxonium ylides—α‐xanthate, α‐thiocyanate, and α‐dithiocarbamate—via molecular iodine‐mediated reactions. This method demonstrates broad substrate tolerance, including heterocycles and steroids, delivering 25 ...
Kauê C. Capellaro   +1 more
wiley   +1 more source

Photoinduced dynamics in protonated aromatic amino acid

open access: yes, 2008
UV photoinduced fragmentation of protonated aromatics amino acids have emerged the last few years, coming from a situation where nothing was known to what we think a good understanding of the optical properties.
Barat, Michel   +5 more
core   +3 more sources

Functional polymer materials containing heavy group‐14 elements focusing on germanium and tin

open access: yesSmart Molecules, EarlyView.
The synthesis, functions, and applications of the polymers containing heavy group 14 elements focusing on germanium and tin are outlined. Owing to their large atomic radii and weak binding energies, the polymers show unique properties: chromism, luminescence, carrier mobility, and reactivity to produce radials and higher coordinated states.
Masayuki Gon, Kazuo Tanaka
wiley   +1 more source

Alcohol and Carbonyl Redox Reactions in Electrochemical Organic Synthesis

open access: yesChemistryEurope, Volume 3, Issue 4, July 14, 2025.
This review aims to provide the reader with a useful tool to deal with electrochemical redox reactions involving alcohols and carbonyl compounds. The review is organized in an accessible format and divided into sections that focus on key parameters of wide‐ranging electrosynthetic methods.
Fiammetta Vitulano   +5 more
wiley   +1 more source

Oxidative Dehydrogenation of N‐Heteroaromatic Alkyl Alcohols and Amines Facilitated by Dearomative Tautomerization

open access: yesChemistry – A European Journal, Volume 31, Issue 39, July 11, 2025.
N‐heteroaromatic alkyl alcohols and amines are inherently unstable in acidic and/or basic solution due to an irreversible dehydrogenation that proceeds from a minority tautomer. In many cases, this reaction results in quantitative oxidation to the corresponding aldehyde, providing a simple, convenient, and green approach for preparing versatile ...
Omid Ghasemloo   +4 more
wiley   +1 more source

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