Results 1 to 10 of about 1,573,053 (108)
Disilyl dithiophosphonates in the synthesis of open chain and cyclic organothiophosphorus compounds
Heteroatom Chemistry, 2004 O-(Trimethylsiloxy)alkyl S-trimethylsilyl aryldithiophosphonates 7a-d were obtained by the reaction of 2,4-diaryl-1,3,2,4-dithiadiphosphetane-2,4- disulfides 5a,b with disilyl derivatives of glycols 6a,c and salicyl alcohol 6b. The reactions of mixed O,S-bis(trimethylsilyl) 2,4-di(3,5-di-tert-butyl-4- hydroxyphenyl)dithiophosphonate 1 and S-silyl ...
Ilyas Nizamov, Litvinov Igor
exaly +5 more sources
A Focused Review of Synthetic Applications of Lawesson’s Reagent in Organic Synthesis
Molecules, 2021 Lawesson’s reagent (LR) is a well-known classic example of a compound with unique construction and unusual chemical behavior, with a wide range of applications in synthetic organic chemistry.
Hena Khatoon, Emilia Abdulmalek
doaj +1 more source
Role of Environmental Chemicals in Obesity: A Systematic Review on the Current Evidence
Journal of Environmental and Public Health, Volume 2013, Issue 1, 2013., 2013 The purpose of this paper is to systematically review the experimental and human studies on obesogenic chemicals and their mechanisms of action to provide a comprehensive view on the multifactorial aspects of obesity. The literatures were searched in available databases. The relevant papers were selected in three phases.
Roya Kelishadi +3 more
wiley +1 more source
Lyophilization: a useful approach to the automation of analytical processes?
Journal of Analytical Methods in Chemistry, Volume 12, Issue 6, Page 267-279, 1990., 1990 An overview of the state‐of‐the‐art in the use of lyophilization for the pretreatment of samples and standards prior to their storage and/or preconcentration is presented. The different analytical applications of this process are dealt with according to the type of material (reagent, standard, samples) and matrix involved.
M. D. Luque de Castro, A. Izquierdo
wiley +1 more source
Zeitschrift für anorganische und allgemeine Chemie, 2006 AbstractReactions of 2,4‐bis(4‐methoxyphenyl)‐1,3,2,4‐dithiadiphosphetane‐2,4‐disulfide with hydroxy substituted compounds (R‐OH) gave rise to the formation of dithiophosphonate compounds 2, 3 and 4 [R‐OH: N‐(2‐hydroxyethyl)‐phthalimide, 1‐(2‐hydroxyethyl)pyridine and 2‐(2‐hydroxyethyl)pyrrolidine].
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Synthesis and characterization of novel organothiophosphorus compounds:
, 2006 Reactions of 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide with hydroxy substituted compounds (R-OH) gave rise to the formation of dithiophosphonate compounds 2. 3 and 4 [R-OH: N-(2-hydroxyethyl)-phthalimide, 1-(2-hydroxyethyl)pyridine and 2-(2-hydroxyethyl)pyrrolidine].
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Tetraphosphorus Trisulfide in the Synthesis of Organothiophosphorus Compounds
Phosphorus, Sulfur and Silicon and the Related Elements, 1990Abstract The investigations of the reactions of lower phosphorus sulfides with organic substances can result in novel non-traditional methods of the synthesis of organophosphorus compounds. Tetraphosphorus trisulfide was proved to react with thioacetals, to give addition products of the a-alkyl-thioalkyl thionphosphonate structure and ...
V A Al'Fonsov, I S Nizamov
exaly +5 more sources
IR spectra and structures of certain organothiophosphorus compounds
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19711. The IR spectra of a number of organothiophosphorus compounds were studied, and the vibration bands of P-S, P=S, and P=Se were identified. 2. The frequency and integral intensity of the vibrations of the P-S bond are sensitive to a change in the surroundings of the phosphorus atom. 3.
R. R. Shagidullin, I. P. Lipatova
exaly +2 more sources
Organothiophosphorus compounds as inductors of the iodine—azide reaction. Analytical application
Talanta, 1994Thiophosphoryl compounds were found to exhibit strong induction activity in the iodine-azide reaction. On this basis three procedures for their determination: titrimetric (0.15-1 mumol), coulometric (1-20 nmol) and spectrophotometric (0.5-5 nmol) have been developed. RSD in all applied methods (techniques) have been found at the 1-7% level.
Piotr Kiełbasiński +2 more
exaly +3 more sources
Phosphorus, Sulfur and Silicon and the Related Elements, 1999
Abstract We have found that S-boron 0-alkyl(ary1)dithiophosphonates react with organic substances containing reactive multiple bonds such as methyl acrylate, vinyl butyl ether, vinyl acetate under mild conditions to form products of insertions into the S-B bond. The similar results were obtained in the case of S-arsenic 0-alkyl(ary1)dithiophosphonates.
Ilyas Nizamov, Elvira S Batyeva
exaly +2 more sources
Abstract We have found that S-boron 0-alkyl(ary1)dithiophosphonates react with organic substances containing reactive multiple bonds such as methyl acrylate, vinyl butyl ether, vinyl acetate under mild conditions to form products of insertions into the S-B bond. The similar results were obtained in the case of S-arsenic 0-alkyl(ary1)dithiophosphonates.
Ilyas Nizamov, Elvira S Batyeva
exaly +2 more sources