The oxidation of 1-octene has been studied in a jet-stirred reactor for temperatures from 500 to 1100 K, at atmospheric pressure, with dilute mixtures of equivalence ratios of 0.25, 0.5, 1.0, and 2.0 in helium. The initial fuel mole fraction was set as 0.005. Product formation has been investiga...

Novel experimental data for physicochemical properties of the bioactive compound N-(5-ethyl-1,3,4-thiadiazole-2-yl)-4-nitrobenzamide have been obtained. The saturated vapor pressure of the studied compound has been measured within the temperature range of 431.15–457.15 K by the inert gas transp...

1,1,3,3,6-Pentamethyl-1,3-disilaindan-5-ol (2) is a key intermediate in the synthesis of new sila-substituted gonadotropin releasing hormone receptor antagonists, such as 1. In order to produce sufficient quantities of 1 for pharmacological and toxicological evaluation, an efficient synthesis of...

Intramolecular amidocyclopropanation reactions of diethoxymethyl-lactams containing a pendant alkene were examined using zinc/TMSCl. With a range of 4–6-membered lactams, bicyclic amidocyclopropanes were obtained with very high diastereoselectivity with a preference for the formation of the mor...

Reaction in air of iron(III) salts with tripodal ligands formed from the condensation of tris-(2-aminoethyl)amine (tren) with three equivalents of 2-pyridinecarboxaldehyde (py) or 1-methyl-2-imidazolecarboxaldehyde (NCH3Im) yielded exclusively the iron(II) complexes, [Fetren(py)3]X2 (X=ClO4 − or...

The FT-IR and FT-Raman spectra of 1-methyl-2-imidazolecarboxaldehyde were recorded in the region 4000–400 cm−1 and 3500–50 cm−1, respectively. Optimized geometric parameters, conformational equilibria, normal mode frequencies, and corresponding vibrational assignments of title molecule were ex...

A unique and efficient method has been developed for the one-pot synthesis of 2-aryl-3-acetyl-2,4-dihydro-1H-5H-1,5-benzodiazepines (4aa–4fa) in good yields using o-phenylenediamine, aromatic aldehyde and 3-butyn-2-one in the presence of a catalytic amount of CeCl3·7H2O in ethanol at ambient t...

H2EMT has been separated into divalent cadmium, mercury, and platinum complexes. The structures of the complexes were identified by various physico-chemical and spectroscopic techniques (UV–vis., IR, Mass Spectrometry and NMR). The FTIR results show that H2EMT exists as a mono-basic NS donor in...

Two carbamate derivatives, tert-butyl 3-methyl-1-(3-m-tolylselenoureido)butan-2-yl carbamate (1) and tert-butyl 5-benzyl-2-(3-chlorophenylamino)-4,5-dihydro-1H-imidazole-1-carboxylate (2) have been synthesized and structurally characterized using single crystal X-ray diffraction. The asymmetric ...

We provide the first causal evidence on whether e-cigarette advertising on television and in magazines encourages adult smokers to quit. We find the answer to be yes for TV advertising but no for magazine advertising. Our results indicate that a policy banning TV advertising of e-cigs would have...

We applied energy dispersive X-ray fluorescence spectrometry (EDX) in a case of poisoning by methomyl, a carbamate pesticide. Quantitative GC/MS analysis showed that the concentration of methomyl-oxime in the femoral blood was 4.0 μg/ml. The elemental analysis by EDX identified the high peak of...

The gas-liquid chromatographic behaviour of methomyl (methyl N-[(methyl- carbamoyl)oxy]thiocetimidate), oxamyl (methyl N′,N′-dimethyl-N-[(methylcarba- moyl)oxy]-1-thiooxammidate), their respective oxime hydrlysis products and the trimethylsilyl (TMS) ethers of the oximes of 5% OV-1 was studied...

A sensitive, selective and reliable method was developed to determine methomyl {methyl-N-[(methylcarbamoyl)oxy]thioacetimidate}, a carbamate insecticide in human blood, using gas chromatography–mass spectrometry. Dimethylglyoxime served as an internal standard (I.S.). Methomyl in the blood was ...

Thermal transitions of poly(N-isopropylmethacrylamide) (PIPMAm) in aqueous solutions were studied in a wide temperature range from −100 to 60 °C. The solutions of different polymer weight fractions (c=0.03–1) were investigated in cooling and heating scans of differential scanning calorimetry; ...

1H and 13C NMR spectroscopies were applied to investigate phase separation in solutions of poly(N-isopropylmethacrylamide) (PIPMAm) in D2O/ethanol (EtOH) mixtures induced by solvent composition (cononsolvency) and temperature. Effects of EtOH content in D2O/EtOH mixtures and temperature on the a...

Temperature-induced phase transition in water solutions of poly(N-isopropylacrylamide) (PNIPAM) and poly(N-isopropylmethacrylamide) (PNIPMAM) have been studied by ATR FTIR and Raman spectroscopy in combination with quantum chemical calculations. The presence or absence of the α-methyl group has...

“Concatenated” two-dimensional (2D) correlation analysis is a newly proposed method. By extracting more detailed information, such as the comparison of effects of two different perturbations or different systems, it helps one to clearly reveal the subtle difference between two dynamic changes ...

Poly(N-isopropylacrylamide) (PNIPAM) core/poly(N-isopropylmethacrylamide) (PNIPMAM) shell microgels react with dilute alkaline bleach, forming chloramides primarily in the PNIPAM core. The resulting microgels are colloidally stable in PBS (phosphate buffered saline) at body temperature because t...

1H NMR spectroscopy was applied to investigate temperature-induced phase separation in solutions of poly(N-isopropylmethacrylamide-co-acrylamide) [P(IPMAm/AAm)] random copolymers in D2O, D2O/ethanol and D2O/acetone. The NMR relaxation behaviour of water (HDO) was also examined. The effects of P(...

Novel smart polystyrene-poly(N-isopropylmethacrylamide-acrylic acid) [[email protected](NIPMAM-Aac] core/shell gel particles were prepared by two step precipitation polymerization method and used as adsorbent for removal of heavy metal ions such as Pb(II), Cu(II), Cd(II) and Cr(III) from aqueous...