Results 1 to 10 of about 810 (79)

Disilyl dithiophosphonates in the synthesis of open chain and cyclic organothiophosphorus compounds [PDF]

Heteroatom Chemistry, 2004
AbstractO‐(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
Il`Yas S Nizamov, Elvira S Batyeva, Igor A Litvinov   +2 more
exaly   +6 more sources

Organothiophosphorus compounds as inductors of the iodine—azide reaction. Analytical application

Talanta, 1994
Thiophosphoryl 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.
Witold Ciesielski, Z H Kudzin, Piotr Kiełbasiński   +2 more
exaly   +4 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   +2 more sources

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, Parinaz Poursafa, Fahimeh Jamshidi, Mohammad Mehdi Amin   +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

Extraction and preconcentration of organophosphorus pesticides in water by using a polymethacrylate-based sorbent modified with magnetic nanoparticles [PDF]

, 2017
[EN] A polymethacrylate-based sorbent modified with magnetic nanoparticles (MNPs) has been synthesized and used as sorbent for solid-phase extraction (SPE) and magnetic solid-phase extraction (MSPE) of three organophosphorus pesticides (phosmet ...
Catalá-Icardo, Mónica, Ernesto F. Simó-Alfonso, José M. Herrero-Martínez, Torres-Cartas, Sagrario, Susana Meseguer-Lloret, Herrero-Martínez, José Manuel, Simó-Alfonso, Ernesto F., Mónica Catalá-Icardo, Sagrario Torres-Cartas, Meseguer-Lloret, S.   +9 more
core   +1 more source

Synthesis and Characterization of Novel Organothiophosphorus Compounds: X‐ray Crystal Structure of H₃COC₆H₄P(OC₂H₄S)(S) Synthesized by a New Method

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].
openaire   +4 more sources

Disilyl dithiophosphonates in the synthesis of open chain and cyclic organothiophosphorus compounds

, 2020
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-
Batyeva E., Abalonin B., Nizamov I., Sergeenko G., Khaibullin R., Al'metkina L., Krivolapov D., Litvinov I., Popovich Y.   +8 more
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In vitro evaluation of some latent radioprotective compounds

, 1976
In tissue culture, protection against X irradiation by a number of cysteamine derivatives was studied and the results were compared with data obtained in mice. Compounds with a covered SH group, like WR 638, cysteamine phosphate, WR 2721 and AE AE 48527,
Budke, L., Vos, O., Grant, G.A.
core  

Ethion [PDF]

"This toxicological profile is prepared in accordance with guidelines developed by the Agency for Toxic Substances and Disease Registry (ATSDR) and the Environmental Protection Agency (EPA).

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