Abstract In this study, we investigated the influence of O 2 , SO and NO x on branched linear polyethyleneimine (PEI) functional silica CO adsorbents (BPEI-SiO LPEI-SiO respectively). was much more likely to oxidize BPEI-SiO compared with form C=O C=N groups led a 23.0% decrease in adsorption capacity after 990 min cumulative contact 10% . contrast, lost only approximately 3.6% its capacity, al...

The redox chemistry of different nitro compounds of biological significance is focused to understand how the reduction of the nitro group can play an active role in several aspects as: electroanalytical determinations, free radical generation and stability and free radical reactivity. We have focused our studies to a lot of pharmaceuticals belonging mainly to the following families: calcium ant...

Synthesis of 2-(4-Acetyl-phenyl)-4-nitro-isoindole-1, 3-dione chalcones were performed by fusion 3-nitro phthalic anhydride with p-aminoacetophenone. Then the later was grinded different aromatic aldehydes in presence sodium hydroxide to produce new derivatives A3-10 without using any solvent formation N-arylphthailimide confirmed FTIR,1HNMR, 13CNMR spectroscopy and all final compounds tested f...

A new variant of the NO(2)-to-CO transformation (the Nef reaction) that occurs at room temperature under neutral conditions is uncovered. After the conversion of secondary nitroalkanes to phenylsulfenylketimines, these thiooximes are hydrolyzed quantitatively in situ, in THF-H(2)O at pH 7, by addition of AuBr(3) (but not with other MX(n)!). Adducts arising from asymmetric nitro-Michael and nitr...

Nitrogen-containing molecules are key scaffolds that are widely applied in organic synthesis as precursors of highly functionalized materials, and are also investigated for their biological activities. This Special Issue collects seven innovative contributions which expand our knowledge of the chemistry of nitro compounds, amines, diazonium salts, and peptides, and that provide a good overview ...

The well-established mechanism of regeneration of the parent nitro compound by the reaction of the nitro anion radical with oxygen in aerobic systems is the basis of the correlation of kinetic parameters of purified flavoenzymes with electron affinities of some selected nitroaryl and nitroheterocyclic compounds. We have found that there is a linear relationship between log Vmax/Km and the one-e...

Eight homoleptic metal(III) arylchalcogenolate polymers [M(EPh-p-X)(3)](n) (M = Ru, Cr, and Mo) were characterized by PXRD. Structural solution of [Ru(SPh-p-tBu)(3)](n)1 was achieved by Rietveld refinement of the PXRD data. Pyrolysis of [Ru(SePh)(3)](n)4 produced nanostructured RuSe(2), which selectively catalyzed the reduction of nitro compounds in the presence of other functionalities.

Controlling the type of indium salt and hydrosilane enables a highly selective reduction of aromatic nitro compounds into three coupling compounds, azoxybenzenes, azobenzenes and diphenylhydrazines, and one reductive compound, anilines.