Vol. 45 No. 3 (226) (2011)

The composition of the coordinatively unsaturated halide (h) complexes of cadmium in ion associates with malachite green and fuxine have been studied. The ratio of components in the complexes has been established spectrophotometrically and argentometrically and independently of nature of dyes and halides to be Cd²⁺:h^– = 1:3. The formula of complexes is Cdh₃⁻.

High-selective method for asymmetric synthesis of (S)-β-(3-(furan-2-yl)-4-allyl-5-thio-1,2,4-triazole-1-yl)-α-alanine through the diastereoselective addition of 4-allyi-3-thio-5-(furan-2-yl)-1,2,4-triazole to the electrophilic C=C bond of dehydroalanine in Ni(II) complex of Shiff’s base with chiral auxiliary (S)-2-N-(N'-2-chlorbenzylprolyl)aminobenzophenone was carried out. The target aminoacid with high optical purity (ee > 99%) was isolated after decomposition of the mixture of diastereomeric complexes.

A method for asymmetric synthesis of new heterocyclic substituted propionic acid derivative via addition of 3-mercapto-1-morpholino-5,6,7,8-tetrahidroisoquinoline-4-carbonitrile to C=C bond of dehydroalanine moiety of Ni(II) complex its Shiff`s base with chiral auxiliary (S)-2-N-(N-benzylprolyl)aminobenzophenone was developed. After decomposition of deastereomeric mixture of complexes the target amino acid − (R)-2-amino-3-(4-cyano-1-morpholino-5,6,7,8-tetrahidroisoquinoline-3-ylthio)propionic acid, was isolated with ee > 98%.

Formation of complex acetates of metal ions Co²⁺, Mn²⁺, Cd²⁺ and monomethilolakrilamidom has been studied. By methods of IR, NMR spectroscopy and element analysis composition and structure of the rough formed chelate complexes are investigated. By measuring the magnetic moments are defined, which made it possible to determine also the coordination numbers of metal ions in the appropriate complexes.

New functionalized 2-imino-2,5-dihydrofuran has been synthesized by inter-action of 3-hydroxy-3-methylbutane-2-one with phenylhydrazide of cyanoacetic acid. Some chemical transformations have been carried out.

Reactions of benzoine interaction with cyanacetic acid, malonic acid, acetoacetic and phenylacetic acid esters have been carried out in the presence of basic catalysts. As a result 3-functionally-substituted-4,5-diphenyl-Δ³-butenolides with high yields have been obtained.

A simple and handy method for obtaining variable 3-N-substituted thieno[2,3-d] and thieno[3,2-d] pyrimidin-4-ones has been developed. The reaction of α- and β-amino ethyl thiophenecarboxilates with dimethylformamide dimethyl acetal forms the corresponding new dimethylaminomethyleneamino derivatives. Above mentioned derivatives when condensed with several aliphatic and aliphatic substituted primary amines form the targeted new 3-N-substituted thienopyrimidin-4-ones with high yields.

Isolated culture of saffron (Crocus sativus L.) was obtained. The conditions of callus stable growth, micro-propagation and organogenesis were developed.

The influence of p-chloromercuribenzoate on rat liver, brain, and kidney arginase isoenzymes activity in the presence of intermediate compound N^G-hydroxiarginine was investigated. It is shown that inhibition enhancement nonureothelic arginases of investigated organs by p-chloromercuribenzoate increases the influence of N^G-hydroxiarginine. Liver ureothelic arginase does not react to the presence of p-chloromercuribenzoate and N^G-hydroxiarginine.

The vitality of yeast cells C. guilliermondii НП-4 and its change under the influece of X-rays was investigated. It has been shown that in radiated cells no vitality was observed, and after postradiated incubation the yeast vitality was реcovered partially, although in comparison with non-radiated cells it remained significantly low.

This study involved the level of pollution with heavy metals and aluminium in the rivers of the Meghriget, Voghchi and Artsvanik. Water samples collected from different sites of the rivers during 2008–2009 were analyzed for Al, Fe, Cu, Mn, Mo, Ni, Pb, Zn, As, Cr, Cd, V, Se. Researches shown that high concentrations of the heavy metals and aluminium in the Voghchi and Meghriget rivers were observed after urban areas. The highest concentration of heavy metals was observed in the Artsvanik river waters which had its impact on the quality of the Voghchi river waters. The maximum permissible concentration (MPC) of aluminium, iron, copper, manganese, molybdenum, zinc, chromium, cadmium, selenium and vanadium was exceeded for culture-domestic water use in the studied river during 2008–2009.

The influence of folic acid (FA) on the rate (R) of cumene autooxidation at 353 K and initiated by AIBN in H₂0/C₆H₅Cl emulsion stabilized by anionic surfactant sodium dodecylsulfate has been studied. It is established that in the presence of FA the reaction begins after some induction period (τ). The function τ = f ([FA]₀ ) is being described by a bell-shape curve. At low FA concentrations prevails its inhibitory action. Increasing [FA]₀ begins its cooxidation parallelly with cumene. FA practically does not act on the steady-state R. But in its presence after some time the steady-state trend of the reaction is being disturbed. The reaction is being continued with decreased rate. In the steady-state R ~ [AIBN ]$_0^{1/2}$ [cumene]₀ . It is assumed that the products of FA transformation is not indifferent with respect to the kinetics of cumene autooxidation. Dianion, which corresponds to FA in a more extent decreases the reaction rate.

Hydrochemical composition and irrigative quality of the river Babolroud were studied. It was revealed that technogenic factor does not evidently affect the chemical composition of the river Babolroud, as the chemistry of the river’s water fits to the water quality formed under the impact of natural factors. According to the composition of the main ions, the value of the total mineralization, water pH, irrigation coefficient and ions correlation, the water of the Babolroud river has a good irrigation quality.

By laboratory researches was proved, that insecticide crystal-forming bacillus introduced into the soil as a result of spraying in the period of vegetation do not influence adversely on nitrifiers – indices of fertility of brown forest soils.