Highly useful halogenated benzofurans and benzothiophenes are prepared from readily available gem-dibromoolefins using a mild, ligand-free copper catalyzed cross-coupling procedure.

Two lower rim halogenated pyrogallol[4]arenes have been synthesised and structurally characterised as either bi-layer or hexameric nano-capsule motifs depending upon chain length and functionalisation.

Introduction Halogenated polycyclic aromatic hydrocarbons (PAHs) are widespread environmental pollutants 1,2 . Chlorinated PAHs (ClPAHs) and brominated PAHs (BrPAHs) are structurally similar to other halogenated hydrocarbons such as polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and biphenyls (PCBs). Although the environmental fates and effects of dioxins have been studied in...

In this paper general concepts relating to, and recent advances in, the study of negative ions of polyatomic molecules area discussed with emphasis on halocarbons. The topics dealt with in the paper are as follows: basic electron attachment processes, modes of electron capture by molecules, short-lived transient negative ions, dissociative electron attachment to ground-state molecules and to "h...

A deprotection-free method was developed for the synthesis of graphdiyne (GDY) powder with in-situ formed CuO nanoparticles, as reported by Mohamed Nawfal Ghazzal, Li-Zhu Wu et al. in their Research Article (e202210242). The prepared CuO/GDY demonstrated to be an excellent co-catalyst photocatalytic hydrogen evolution, comparable state-of-art Pt cocatalyst. work will widen use GDY and facilitat...

Office devices can release volatile organic compounds (VOCs) partly generated by toners and inks, as well as particles of paper. The aim of the presented study is to identify indoor emissions of volatile halogenated organic compounds into the office workspace environment. Mixtures of organic pollutants emitted by seven office devices, i.e. printers and copiers, were analyzed by taking samples i...

Concentrations of halogenated volatile organic compounds VOCs were determined by gas chromatography GC with an electron-capture detector GC-ECD and by gas chromatography with mass spectrometry GC-MS in 109 groundwater samples from five study areas in the United States. In each case, the untreated water sample was used for drinking-water purposes or was from a monitoring well in an area near a d...

Based upon the radiation sensitization properties of the halogenated pyrimidines, 5-iododeoxyuridine (IdUrd) and 5-bromodeoxyuridine, long term i.v. infusions of halogenated pyrimidines in conjunction with fractionated radiation therapy have been evaluated in the treatment of a variety of human malignancies. While clinical studies have attempted to measure the halogenated pyrimidine incorporati...