Disubstituted [1,3,4]-oxadaiazoles (6a-b), Mannich bases (7a-f) and S-alkylated derivatives (8a-f) have been synthesized from 4-(methylsulfonyl/sulfinyl)phenylaceticacid (3a-b) through a multi-step reaction sequence starting from (4-methylthio)phenylacetonitrile (1). The structures of new compounds were established on the basis of their elemental analysis, IR, H NMR, C NMR and mass spectral dat...

emissions from fossil fuel combustion pose a serious threat to public health and =pose the need for animproved monitoring of polycyclic aromatic hydrocarbons (pars), a major class of persistent organicpollutants. for this purpose the present study reports an investigation of the electronic structure of pyrene byuse of different chemical models we also made a comparison between different chemica...

Novel analogues of N-piperazinyl fluoroquinolones were prepared and evaluated against a panel of Gram-positive and Gram-negative bacteria, to study the effect of introducing bulky anthracene and phenanthrene moieties on the antibacterial effects of norfloxacin, ciprofloxacin and gatifloxacin. Although most of the novel synthesized compounds had lower antibacterial effects, some derivatives show...

DNA was isolated from mouse embryo cell cultures that had been treated with 7-methylben/[fl]anthracene-3H and subsequently degraded with enzymes to deoxyribonucleosides that were chromatographed on a Sephadex LH-20 column. The resultant hydrocarbon-deoxyribonucleoside products were not present in similar enzyme digests of DNA that had been reacted in aqueous solution with either 7-bromomethylbe...

Synthesis of hydroazulene derivatives has been carried out through a ring-enlargement route by using carbene adduct intermediates. The protocol can be applied for the construction of functionalized hydroazulene skeletons as key components of many natural products as well as the core system of novel liquid-crystalline materials.

In this paper, we elucidated the observational changes in conductance of different anthracene derivatives namely anthracene, anthraquinone, anthracenediamine and anthracencedithiol through two-terminal molecular junctions at room temperature. The main purpose of this work was to show varying impacts of interference phenomena in anthracene molecule stringed to two identical electrodes by differe...

Aminoanthraquinones were successfully synthesized via two reaction steps. 1,4-Dihydroxyanthraquinone (1) was first subjected to methylation, reduction and acylation to give an excellent yield of anthracene-1,4-dione (3), 1,4-dimethoxyanthracene-9,10-dione (5) and 9,10-dioxo-9,10-dihydroanthracene-1,4-diyl diacetate (7). Treatment of 1, 3, 5 and 7 with BuNH2 in the presence of PhI(OAc)2 as catal...

The relevance of this study stems from the need for alignment test methods used identification and assay anthracene derivatives in herbal preparations medicinal products. aim was to analyse Russian international quality standards identify most specific sensitive that could be medicines containing derivatives. comparative analysis requirements Identification , Determination major classes bioacti...

To identify families of stable planar anchor groups for use in single molecule electronics, we report detailed results for the binding energies of two families of anthracene and pyrene derivatives adsorbed onto graphene. We find that all the selected derivatives functionalized with either electron donating or electron accepting substituents bind more strongly to graphene than the parent non-fun...