Delavirdine mesylate was recrystallized from solution under a variety of conditions. Seven crystal forms and a stable amorphous phase were isolated from solution. Two of these crystal forms were polymorphic anhydrates: form XI (U-90152T) and form VIII (U-90152S). Two hydrates (forms VI and XIV),...

Chloroanisoles are often reported as off-flavor compounds which produce an earthy and musty flavors and odors in drinking water. To improve understanding and ultimately minimize the formation of 2,4-dichloroanisole (2,4-DCA), 2,6-dichloroanisole (2,6-DCA) and 2,4,6-trichloroanisole (2,4,6-TCA), ...

Tricarbonyl(o-chloroanisole)chromium was treated with an alcohol and carbon monoxide in the presence of triethylamine and a chiral palladium catalyst to give (o-methoxybenzoate ester)Cr(CO)3 complexes in high selectivity with up to 30% ee. Starting tricarbonyl(o-chloroanisole)chromium was recove...

The radiation-induced degradation of 2-chloroanisole (2-ClAn) is investigated under various experimental conditions in neutral aqueous media as a function of absorbed radiation dose. The initial yields (Gi-values) of substrate degradation as well as those of the resulting major products were det...

The title compounds were prepared from 1-[5-(4-bromophenoxy) pentyl]uracil by the introduction of N-arylacetamide moiety at the 3-position, the better approach involving the use of N-aryl-2-chloroacetamides as the reactants. Antiviral activity of the obtained compounds was estimated.

Azinphos-methyl and chlorpyrifos are the organophosphorous pesticides which pose serious threats to the environment including their detrimental effect on humans and, therefore, their removal from the environment is a must. Hence, in the present paper the ultrasound technique was applied to remov...

By squeezing electromagnetic energy into small volumes near a metal-dielectric interface, plasmonics provide many routes to enhance and manipulate light-matter interactions, which presents new strategies for signal enhancing technologies. As an extension of the ideas of plasmonics to the teraher...

Elevated levels of chlorpyrifos‑methyl have been detected in plant-based Atlantic salmon feeds. To evaluate the potential negative effects of long-term and continuous dietary exposure to chlorpyrifos‑methyl in fish, we fed juvenile Atlantic salmon three concentrations (0.1, 1.0 and 8.0 mg/kg) of...

The effects of inherent minerals in biochars and low molecular weight organic acids (LMWOAs) on chlorpyrifos and chlorpyrifos-methyl adsorption by biochars are unclear. We examined the sorption of chlorpyrifos and chlorpyrifos-methyl onto giant reed-derived biochars before and after deashing or ...

Anodic oxidation of 2,5-dioxabicyclo[4.4.0]decane 1a, 1-methoxy-2,5-dioxabicyclo[4.4.0]decane 1b and 1-hydroxy-2,5-dioxabicyclo[ 4.4.0]decane 1c in methanol in the presence of tetrabutylammonium fluoroborate as a supporting electrolyte induces the electrooxidative transformation of substrates 1a...

We introduce a family Mr;f,η of infinitesimal supergroup schemes, which we call multiparameter supergroups, that generalize the infinitesimal Frobenius kernels Ga(r) of the additive group scheme Ga. Then, following the approach of Suslin, Friedlander, and Bendel, we use functor cohomology to de...

Isothermal VLE for the (R-23 + n-propane) system was measured using a static-analytic apparatus at temperatures between T = (293.18 and 353.15) K. The critical loci for the systems {R-23 + (n-propane or n-hexane)} and (R-116 + n-propane) were measured using a critical point determination apparat...

In this study we present surface-enhanced Raman spectroscopy (SERS) investigations of ortho-substituted N-benzylamino(boronphenyl)methylphosphonic acid (N-benzylamino-(2-boronphenyl)-R-methylphosphonic acid; o-PhR) adsorbed onto a roughened in oxidation–reduction cycles (ORC) Ag, Au, and Cu ele...

The study of the adduct formation of Ni(II)di(2,4-dimethylphenyl)cabazonate has been undertaken by synthesising and characterising it by magnetic susceptibility, IR and 1H-NMR spectral measurements. The Ni(II) chelate forms adducts with heterocyclic nitrogen bases, spectrophotometeric method has...

Methyl substituted phenyl containing dithiocarbamate compound has been investigated as corrosion inhibitor against steel corrosion in 1 M HCl solution. The inhibitor (namely ammonium (2,4-dimethylphenyl)-dithiocarbamate) offers extra stability and higher inhibition efficiency when compared to pr...

A series of novel 2-(substituted phenoxyacetoxy)alkyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one bearing fluorine 5a-n and fluorine free 5o-q were designed and synthesized. The results of bioassay showed that some of the target compounds exhibited excellent herbicidal activities to Abutilon theoph...

We describe the diastereoselective α-allylation of various amines using an anodic oxidation-amidoalkylation sequence. Especially, we found that an acyclic amine, diethylamine, can be allylated with an excellent diastereoselectivity, as high as 94/6. Following our simple protocol, functionalized...

A guaianolide and a triterpene epoxide with a taraxasterene skeleton (ptiloepoxide) have been isolated from the aerial parts of Ptilostemmon gnaphaloides together with known compounds. The structure and relative stereochemistry of the triterpene epoxide were determined by high-field two-dimensio...

Investigation of the aerial parts of Psilostrophe gnaphaloides and reinvestigation of Psilostrophe cooperi afforded in addition to known modified helenanolides several new representatives of this class, all closely related to hymenolide.

The aerial parts of Leyssera gnaphaloides afforded seven new diterpenes, four labdanes, two 13-epi-manoyloxide derivatives as well as one kaur-15-ene derivative. The structures were elucidated by high field NMR spectroscopy.