CHEMICAL PROBLEMS

SYNTHESIS OF NITROGEN AND SULPHUR DERIVATIVES OF NORBORNANE

Oct 24, 2025 •

Synthesis of nitrogen and sulfur-containing derivatives of norbornan on the basis of γ-chloroethers has been examined and inhibiting properties of synthesized nitrogen and sulphur-containing derivatives of norbornan studied.. It has been established that compounds (III) and (IV) in hydrochloride and sulphuric acids manifest effective inhibiting effect with protection degrees of 99.4 and 92.5% respectively at […]

SOLID-PHASE REACTIONS OF KAOLINITE WHITH DOLOMITE

Oct 24, 2025 •

Using the X–ray and thermogravimetric methods of analysis there have been analysed solid-phase reactions of mineral kaolinite (K) whith mineral dolomite(D) at ratio K:D=1:1; 2:1; 3:1; 1:2 and CaMgAl4Si4O16 compounds obtained.

PURIFICATION OF RIVER WATERS FROM OXADIAZON HERBICIDIDE BY ADSORPTION METHOD

Oct 24, 2025 •

The paper analyses to the adsorption purification of river waters from oxadiazon by chitin, active coal, bentonite and its Fe(III) cation form adsorbents. It became obvious that effectiveness of purification of river waters from oxadiazon herbicidine depends both on sorbents and pH. The influence of pH on adsorption of oxadiazon in sorbents was analyzed. It […]

OPTIMUM CONDITIONS OF REACTION OF BICYCLO [2.2.1]HEPT-2-YLACRYLATE SYNTHESIS

Oct 24, 2025 •

The influence of temperature, molar ratio of initial components, duration of reaction and nitrogen pressure on the yield of bycyclo[2.2.1]heptylacrylate have been retraced. The mathe- matical processing of experimental data made it possible to obtain particular dependences of the yield upon each factor in the form of second order equation. A generalized equation of output […]

ANALYSIS OF PASSIVE CIGARETTE EFFECT SMOKING ON HDL CHOLESTEROL ELEVATION

Oct 24, 2025 •

The paper attempts to investigate the effect of passive cigarette smoking (PCS) on blood HDL cholesterol levels, and it could be suggested that this is a rarely examined condition as available in previous studies. PCS, however, is a practice experienced at home, in the office, cafe, etc. In our daily lives, and this fact, the […]

HIPEROZID OF CUSCUTA CAPULATA GROWING IN AZERBAIJAN

Oct 24, 2025 •

The repot provides data on extraction and identification of flavonoid galactozide – hyperozid out of Cuscuta capulata growing in Azerbaijan. To identify a substance, some chemical transforma- tions were made, including quntitative acid hydrolysis, acetylation, alkalyne destruction.

SINTHESIS OF H-(2-CYKLOHEXILPIRRIL)-VINE QAZ ACID AND RESEARCH INTO BIOLOGICAL ACTIVITY OF THEIR SODIUM SALT

Oct 24, 2025 •

H-(2-cyclohexilpirril) acetic acid has been synthesized through the reaction of cyclohexil β,γ-dichlorketon with glycin in the water solution of alkali. Biological activity of sodium salt of the synthesized acid has been tested in comparison with heteroacetik and hybberel acids. It has been established that it is higher than the compounds above by their biological activity.

SYNTHESIS AND PROPERTIES OF HALOID- CONTAINING ETHERS OF 2-CHLOROACRYLIC ACID

Oct 24, 2025 •

It has been shown that in the course of interaction of sodium chloride of 2-chloroacrylic acid with alkenyl and alkynylhalogenides (in the presence of triethylbenzylammonium chloride, at 80–85°C) with high yields appropriate, non-limiting ethers of 2-chloroacrylic acid are formed. It has been established that the synthesized haloid- containing ethers possess antiwear and antirub properties and […]