Diels–Alder cycloaddition of 8,8-dimethylnaphthalene-1,4,5(8H)-trione with diastereomeric hydroxysulfinyldienes proceeded with high yields and good π-facial and regioselectivities. The hydroxysulfoxide moiety controls the regio- and stereoselectivities, through hydrogen bonds in the suggested ...

We report a hydrogen-evolution dimerization of styrenes via the synergistic merger of Acr+-Mes photocatalyst and cobaloxime proton reduction catalysts. By utilizing this dual catalyst system, 1,2-dihydro-1-arylnaphthalene derivatives can be directly constructed from commercially available styren...

Photoelectron spectroscopy HeI,HeII and quantum mechanical calculations (STO-3G) were used to analyze the electronic structure of tautomers of 1,2,4-triazole and its halogenated derivatives.The photoelectron spectra of the title compounds compared to those of fixed structure models demonstrated ...

Novel Cu(II), Ni(II) and Zn(II) complexes that have N-({2-[(allylamino)carbonothioyl]hydrazino}carbonothioyl)benzamide, 5-allylamino-4-benzoyl-2,4-dihydro-3H-1,2,4-triazole-3-thione and 3-benzoyl-6-bromo-3,5,6,7-tetrahydro[1,2,4]triazolo[1,5-a]pyrimidine-2(1H)-thione moieties have been synthesiz...

Effects of 2-amino-5-(ethylthio)-1,3,4-thiadiazole (ATD) on copper corrosion as a corrosion inhibitor in de-aerated, aerated and oxygenated 3% NaCl solutions have been studied using potentiodynamic polarization, potentiostatic current–time, electrochemical impedance spectroscopic (EIS), weight ...

An oxygen containing tetrathiapentalene (TTP) derivative with ethylthio chains, C2TEO-TTP has been synthesized. The charge-transfer complexes show two types of crystal forms and conducting behavior. (C2TEO-TTP)2X (X=PF6 and AsF6) have β-type structure and metallic conductivity down to liquid he...

In this study, the compound 2-(ethylthio)pyrimidine-4,6-diamine (ETPD) was re-synthesized and its single crystals were obtained by slow evaporation of ethanol solution. The characterization of the molecule was done experimentally and theoretically. The single-crystal X-ray diffraction analysis s...

Fluorescent 4-ethylthio-1,8-naphthalimides containing rhodium(I) N-heterocyclic carbene (NHC) and ruthenium (II) NHC fragments were synthesised and evaluated for their antiproliferative effects, cellular uptake and DNA-binding activity. Both types of organometallics triggered ligand dependent ef...

The infrared (4000–225 cm−1) and Raman (3500−60 cm−1) spectra of 2-Amino-5-(ethylthio)-1,3,4-thiadiazole (AEST; C4H7N3S2) have been recorded in the solid phase. In addition, the 1H and 13C NMR spectra of AEST were obtained in DMSO-d6. We have focused on five staggered conformers (1–5) resultin...

Novel 3-(ethylthio)phenyl-substituted phthalocyanine and naphthalocyanine zinc complexes were synthesised with high yields. The Suzuki cross-coupling reaction provides selective approaches to the initial mono- or di- 3-(ethylthio)phenyl-substituted phthalonitriles. The complexes obtained were ch...

The optimized geometrical structure, vibrational and electronic transitions, chemical shifts and non-linear optical properties of ethyl trans-alfa-cyano-3-indole-acrylate (C14H12N2O2) compound were presented in this study. The ground state geometrical structure and vibrational wavenumbers were c...

Steady state absorption, fluorescence and femtosecond transient absorption techniques were employed to investigate the excited state relaxation mechanism of trans-ethyl-3-(1H-indole-3-yl)acrylate (trans-EIA). The measured large value of difference in the static dipole moment from ground state to...

AimsOne of the main features of sulfurous water (SW) is the presence of hydrogen sulfide (H2S), which confers its antioxidant activity. Since oxidative stress plays an important role in Alzheimer's disease (AD) we hypothesize that SW could have a protective effect in these patients.

This study is the first large scale examination of the stratigraphic relationships of acid sulfate soils in Australia. Field and laboratory data from 346 excavated acid sulfate soil profiles for an extensive soil survey undertaken to map their extent were classified into non acid sulfate soil (N...

The efficiency of esters of sulphurous acid as secondary antioxidants has been studied. Several aliphatic as well as aromatic open-chain and cyclic sulphites were synthesized and reacted with tert-butyl-, cumene- and α-tetralin hydroperoxides. All sulphites investigated decompose hydroperoxides...

The electrowinning of copper from acidic sulfate solution in the presence of sulfurous acid using a graphite anode was investigated. The effects of operating variables including sulfur dioxide concentration, copper concentration, sulfuric acid concentration, current density and temperature on th...

Sulfurous acid (H2SO3) has never been characterized or isolated on Earth. This is caused by the unfavorable conditions for H2SO3 within Earth's atmosphere due to the high temperatures, the high water content and the oxidizing environment. Kinetic investigations by means of transition state ...

A sulfur cycle-based bioprocess for co-treatment of wet flue gas desulfurization (WFGD) wastes with freshwater sewage has been developed. In this process the removal of organic carbon is mainly associated with biological sulfate or sulfite reduction. Thiosulfate is a major intermediate during bi...

Commercial grade weakly basic resin D301 was impregnated with iron through a simple method using ferric chloride. Experiments for single, bisolute and trinary competitive adsorption were carried out to investigate the adsorption behavior of 2-naphthalenesulfonic acid (NSA), sulfuric acid and sul...

Nitrosomonas europaea, an ammonia oxidizing bacterium, was chosen as a research model to study the alteration of cell membrane in the presence of sulfurous acid and biodegradation of acetochlor. Significant changes of the outer cell membrane were observed in the presence of sulfurous acid using ...