The results of thermochemical analysis of 2,4,5-trimethylbenzoic acid synthesis by 1,2,4,5-tetramethylbenzene oxidation with aqueous nitric acid solutions in the concentration range from 32.5 to 59.0 wt % are reported. Synthesis conditions have been chosen on the basis of the thermochemical data obtained, and their appropriateness has been verified experimentally. These conditions are suggested for developing a new 2,4,5-trimethylbenzoic acid synthesis process.

New achiral separating bifunctional reagents, dichlorides of methylphosphonic and O-ethyl-thiophophoric acids, have been used for the quantitative determination of the enantiomeric composition of α-amino acids (alanine, valine, proline), secondary alcohols (2-octanol, 2-pentanol, 1-methoxy-2-propanol) and α-phenylethylamine. The determination of the enantiomeric composition of optically active α-amino acids, secondary alcohols, and amines is based on the transformation of compounds into symmetric diastereometers using organophosphorous achiral bifunctional reagents followed by the determination of the derivatives by gas chromatography with a mass spectral detector.

Anodic dissolution of ferroniobium in anhydrous methanol in the presence of sodium methylate was studied. The possibility of recovering pure hexamethoxyniobate from the electrolyzate and its conversion into niobium methylate with an iron content not exceeding 0.01% was analyzed.

This review presents the author’s views on the state-of-art in the electrochemistry of organic compounds, based on the analysis of the data published from 2000 to 2006. The number of publications that consider to one or another extent the electrochemical reactions involving organic compounds constantly increases. The range of problems studied is intimately related with the demands of new technologies. The largest number of publications are devoted to the electrochemical polymerization and the properties of polymeric films on the electrode surface and also to the mechanism of electrode reactions of metal-complex compounds and their properties. The directions such as electrochemistry of nanomaterials and the methods of modification of electrodes are largely associated with the use of electroactive polymers. Fine organic electrosynthesis including the technological developments in the destruction of organic compounds, e. g., for cleaning of waste water, fade to the background. A new direction in this field is the development of amperometric sensors that employ modified electrodes based on electrochemically activated polymeric films.

The process parameters of dehydrogenation of pantolactone with bromine in chloroform and the possibility of bromine recycling by electrolysis of hydrogen bromide formed in the synthesis of ketopantolactone were studied.

AbstractBei der elektrochemischen Reduktion des weißen Phosphors in Gegenwart von Styrol entsteht vorzugsweise die Verbindung (II), in deutlich geringeren Mengen die Substanzen (III) und (IV), zuweilen auch noch (I).