freshly prepared zno nanoparticles were used as an effective heterogeneous base catalyst for the synthesis of aryloximes. the conversion of arylaldehydes and arylketones into the corresponding oximes (up to quantitative yields) was achieved by simply mixing the liquid reactants and hydroxylamine hydrochloride with zno nanoparticles under solvent-free condition. the procedure was carried out und...

The palladium catalytic system was first applied to 2-arylquinazoline synthesis via hydrogen transfer methodology. Various (E)-2-nitrobenzaldehyde O-methyl oximes reacted easily with alcohols or benzyl amines to provide N-heterocyclic compounds in good to high yields. Similarly, the heterocyclic products could be prepared by the reaction of 1-(2-nitrophenyl)ethanone, urea and benzyl alcohols. I...

A metal-free visible-light photoredox-catalyzed intermolecular cyclization reaction of O-2,4-dinitrophenyl oximes to phenanthridines was developed. In this study, the organic dye eosin Y and i-Pr₂NEt were used as photocatalyst and terminal reductant, respectively. The oxime substrates were transformed into iminyl radical intermediates by single-electron reduction, which then underwent intermole...

The Cover Feature illustrates a self-assembly of core molecules, branching units, and terminating caps. By formation heteroleptic metal complexes oximes, second generation dendrimer is formed upon mixing the building blocks in proper stoichiometry. tree displays typical dendrimers also tribute to its name as dendron means greek. More information can be found Research Article by D. Wetzel U. Lün...

A highly regioselective protocol for the synthesis of isoxazolines through cascade C?O and C?Br bond formation has been developed. The electrochemical approach uses traceless electrons as a sole source oxidant, thus avoiding use stoichiometric organic or inorganic oxidants provides mild environmentally benign alternative pathway wide range valuable substituted from alkenyl oximes in good yields.

Hydroxylamines gradually undergo oxidation to their oximes on being dissolved in organic solvent (e.g. methanol). This phenomenon was followed by (1)H-NMR and liquid chromatography-mass spectrometry (LC-MS). The oxidation rate was estimated from the peak area observed on the mass chromatogram at the protonated molecule or fragment ion on LC-atmospheric pressure chemical ionization (APCI)-MS. Th...