The tertiary phosphine oxides (TPO) comprise a large group of organophosphorus compounds to which a considerable attention in the literature is paid [1-5]. However, only few TPO ’s containing one or more primary amino groups in their mole­ cules are known. Studies on such compounds are limited [6-12]. Because of the high activity of amino groups these compounds can be used as phosphorylation ag...

Investigations have been carried out by us in the Biochemical Laboratory of the Cardiff City Mental Hospital during 1938, 1939 and early 1940 on the effects of organic trivalent and pentavalent arsenic compounds on proteins and enzymes. The work was primarily undertaken to elucidate the biochemical basis of the trypanocidal and anti-spirochaetal action of a variety of organic arsenic compounds ...

The purpose was to study the patterns of dissolution (solubilization) phosphorus-containing minerals in aqueous and polysaccharide solutions organic acids order model mechanism mineral destruction by soil bacteria synthesizing exopolysaccharides. Methods. Model, laboratory-analytical, microbiological, statistical. Results. destructive effect on is manifested both solutions. introduction bacteri...

in order to study the effect of organic fertilizers application on increasing nitrogen efficiency and also quantitative and qualitative characteristics of sugar beet, a series of experiments were performed for two years (2008 and 2009) using three amino acid containing organic fertilizers at motahari research station of sugar beet seed institute (sbsi), karaj, iran. four rates of organic fertil...

Migration of chemicals from plastic containers into drinks and liquids containing them, is supposed to be a hazardous phenomenon and results in many health problems. Sample preparation is of great importance due to trace amounts analysis of these compounds. In this research, dispersive liquid–liquid microextraction is applied for the extraction and preconcentration of the migrated compounds pri...

This review highlights the rapid evolution of the newly-developed class of palladium-catalyzed cross-coupling reactions of organosilicon compounds. A myriad of heteroatom-containing silicon moieties (silyl hydrides, siletanes, silanols, silyl ethers, orthosiliconates, di- and polysiloxanes and pyridylsilanes) undergo mild and stereospecific cross-coupling. The diversity of methods for introduct...

Abbreviations and notes: N = nitrogen; Cu = copper; Fe = iron, Mn = manganese; Mo = molybdenum; Ni = nickel; Se = selenium; Zn = zinc. Sulfur is an essential macronutrient for plants and animals, and is required for many important metabolic functions. Plants are able to convert sulfate (SO 4 ) into organic compounds, but animals must consume S-containing amino acids (methionine and cysteine) fo...