The FT-IR and FT-Raman spectra of 4-hydroxy-3-methylacetophenone (HMA) and 4-hydroxy-3-methoxyacetophenone (HMOA) have been recorded. The total energy calculations of HMA and HMOA were tried for various possible conformers. The spectra were interpreted with the aid of normal coordinate analysis ...
The production of Ph3Sn–O–SBA-15 (Ph3SnSBA) was achieved by heating triphenyltin chloride and SBA-15 in N-methylpyrrolidone at 190 °C for 5 h using triethylamine as a catalyst. The composition, structure, and surface physical and chemical properties of Ph3SnSBA were characterized using induct...
The vapour phase acetylation of toluene has been catalysed by acidic H-ZSM-5, H-mordenite and REY zeolite catalysts at 453 K in a tubular reactor at atmospheric pressure. H-ZSM-5 exhibited the best results during the reaction with respect to rate of acetylchloride conversion (TOF=7.5 mol s−1 mol...
Values of the condensed phase standard (p = 0.1 MPa) molar enthalpy of formation for 2′- and 4′-methylacetophenones were derived from the standard molar energies of combustion, in oxygen, at T = 298.15 K, measured by static bomb combustion calorimetry. The values of the standard molar enthalpy...
The kinetics of the photochemical reaction of tert-butylguaiacyl-carbinol sensitized by p-methoxypropiophenone in aerated dimethoxyethane solution were measured experimentally. In contrast with the same model system in oxygen-free solution, the concentration of the sensitizer in the presence of ...
The photochemical reaction of tert-butylguaiacylcarbinol sensitized by p-methoxypropiophenone in an oxygen-free solution was studied experimentally and by computer modelling. The simulation of the reactions of these lignin model compounds was done in two steps. In the first step the reaction of ...
The N-Methyl-d-Aspartate receptor (NMDAR) is involved in many neurological and psychiatric disorders including Alzheimer's disease and schizophrenia. The aim of this study was to develop a positron emission tomography (PET) ligand to assess the bio-availability of the NMDAR ion channel in v...
The 1H NMR spectra of N-methoxy-N-methyl-2-[(4′-substituted)phenylsulfinyl]-propanamides [Y-Ph-S(O)CH(Me)C(O)N(OMe)Me; Y = OMe 1, Me 2, H 3, Cl 4, NO2 5] along with the X-ray diffraction analysis of the nitro-derivative (5), have shown the existence of two pairs of diastereomers (racemic mixtur...
Two new series of imidazole derivatives (acetamides: 1–8 and sulfonamides: 9–15) were synthesized using a short synthetic route. Compound 1 as well as the intermediate 16g were characterized by X-ray crystallography. Imidazole derivatives 1–15 were tested in vitro against three unicellular pa...
The cis-trans conformational equilibrium of amides is of interest because it can be used to control functional activity. Here, we designed and synthesized a series of N-(3-thienyl)amides in order to study the factors affecting their conformational equilibrium. NMR studies showed that the major c...
This report displays the procedure in preparation of fast, highly productive, reusable, and easily retrievable Pd nanoparticles (NPs) as a heterogeneous catalyst (Pd [email protected](3-MPAP)) immobilized on a novel polyazomethine with phenol group, Poly(3-methyl-4-((pyridin-2-ylmethylene)amino)...
When attempting to synthesize symmetric 2,2′-dihydroxy-4,4′-dimethyl-azobenzene from 5-methyl-2-nitrophenol by reductive methods based on two literature procedures, an unexpected product was isolated in 30% yield. Full analysis by mass spectrometry, NMR spectroscopy, and single-crystal X-ray s...
Using a non-extractable layer of polyethylene glycol succinate (PEGS) on Chromosorb P, additionally coated with a PEGS stationary phase in a short column, a rapid and successful analysis of 2-chloro-4-nitroaniline was achieved. Chromosorb P AW (0.015% Fe) after coating with PEGS has undergone th...
Niclosamide is an antihelmintic drug susceptible to being metabolized into a bacterial mutagen by the action of enzymes present in the S9 activation mixture. Additional results from genotoxic studies in rodents and humans suggest that the drug is absorbed from the gastrointestinal tract, and mut...
SummaryIn this work the preparation of orthophenylenediamine (OPDA) from 4-chloro-2-nitroaniline was studied on alumine supported palladium catalysts. High OPDA yields were obtained on catalysts containing stabilized ionic palladium. In the preparation of the given palladium containing catalysts...
The solid phase FTIR and FT-Raman spectra of 2-chloro-4-nitrotoluene (2Cl4NT) and 4-chloro-2-nitrotoluene (4Cl2NT) were recorded in the regions 4000–400 cm−1 and 4000–50 cm−1 respectively. The fundamental vibrational frequencies and intensities of the vibrational bands were evaluated using den...
Soil and topical tests were employed to investigate the effect of two N-nitroso metabolites of RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) on earthworm reproduction. The lowest observed effect concentration (LOEC) for cocoon production and hatching was 50 mg/kg for both hexahydro-1-nitroso-3,5...
The effect of two major hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) metabolites, hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX) and hexahydro-1,3,5-trinitroso-1,3,5-triazine (TNX), on cricket (Acheta domesticus) survival and reproduction was studied. RDX metabolites did not have adverse ...
High-explosive compounds including hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) were used extensively in weapons research and testing at Los Alamos National Laboratory (LANL). Liquid effluents containing RDX were released to an outfall pond that flowed to Cañon de Valle at LANL's Technical...
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