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1.668  Articles
1 of 168 pages  |  10  records  |  more records»
The barrier to internal rotation around the central C2–C3 single bond of a series of (1E)-monosubstituted 1,3-butadienes and (1E,3E)-1-Y-4-X-disubstituted butadienes, with Y=NH2 or OCH3 and X=NO2, CHO, COOH, CN, CF3, Cl or F, were studied at the density f... see more

The constants of ionization pKBH + of substituted 6,9-dichloracridines have been determined in the mixed ethanol – water solvent (50 mole percent of ethanol) at the temperature of 25°C by the method of potentiometric titration. It has been shown that thes... see more

The constants of ionization pKBH + of substituted 6,9-dichloracridines have been determined in the mixed ethanol – water solvent (50 mole percent of ethanol) at the temperature of 25°C by the method of potentiometric titration. It has been shown that thes... see more

The solvatochromic responses of six indicators namely Sudan orange, Alizarin yellow R, Aurin tricarboxylic acid, Alizarin yellow GG, Titan yellow and Eriochrome black-T, dissolved in seven solvents of different polarities, have been measured at room tempe... see more

This study is devoted to development of the optimal conditions for synthesis and the study of some “structure – antioxidant activity” regularities of [(1-arylimidazole-5-yl)methylthio]alkane carboxylic acids, which structural analogues have found an appli... see more

The reactivity of substituted 5,7-dichloro-9-hydrazine acridine that exhibit various pharmacological activity by studying acid-base equilibria in the ethanol-water binary solvent (50 mol % ethanol) at 250? using the method of potentiometric titration has ... see more

The rotational barrier RB around C–NH2 bond between the minimum and maximum states of 84 electron-withdrawing groups at para-position in aniline were studied at the density functional wB97X-D/6-31G** level. The rotational barrier was found to correlate st... see more

The reactivity of substituted 5,7-dichloro-9-hydrazine acridine that exhibit various pharmacological activity by studying acid-base equilibria in the ethanol-water binary solvent (50 mol % ethanol) at 250? using the method of potentiometric titration has ... see more

Aim. To study the effect of the structural parameters of styrylacetic acid amides on the course of the reaction of the electrophilic intramolecular cyclization under the action of polyphosphoric acid and search the rational approaches to obtain N-unsubsti... see more

1 of 168 pages  |  10  records  |  more records»