Results 201 to 210 of about 3,074,550 (258)
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Aminoalkyl Organophosphorus Compounds
Russian Chemical Reviews, 1974Data on the methods of preparation of aminoalkyl compounds of phosphorus (by transformation of functional groups and by aminoalkylation of tervalent phosphorus compounds) and their physical and chemical properties are presented and the practical applications of substances of this type are briefly described. The bibliography includes 528 references.
K A Petrov, V A Chauzov, T S Erokhina
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Organophosphorus compounds—XVI
Tetrahedron, 1972Abstract Trialkyl phosphites react with the monohydrates of 1,2,3-indantrione (ninhydrin) (VII) and 1,3-diphenylpropanetrione (VIII) to give the corresponding phosphate derivatives XIa–c and XVIIIa–c. The same compounds are obtained upon reacting VII and/or VIII with the proper dialkyl hydrogen phosphite.
M.M. Sidky, M.R. Mahran, W.M. Abdo
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ORGANOPHOSPHORUS COMPOUNDS, XXX
Phosphorus and Sulfur and the Related Elements, 1980Abstract Fluoroenylidenetriphenylphosphorane (1a) reacts with maleic and phthalic anhydrides to give lactones 2a and 3, respectively. The same reagent (1a) extrudes sulphur from thiophthalic anhydride yielding the spiro-1,3-indandione derivative 4. The infrared and mass spectra of the new products are discussed.
M. M. Sidky, M. R. Mahran, L. S. Boulos
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Organophosphorus compounds—XIX
Tetrahedron, 1974Abstract Trimethyl and triethyl phosphites react with diphenoquinone 3 , yielding 4,4′-dihydroxydiphenyl 10 ; 4′-alkoxy-4-biphenylyl dialkyl phosphates 5 , 4,4′-biphenylylene tetraalkyl bis(phosphates), 6 , and 4′-hydroxy-4-biphenylyl dialkyl phosphates 9 are also isolated in minor yields. The effect of temperature on the reaction is studied. A
M.M. Sidky +2 more
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Organophosphorus compounds—VIII
Tetrahedron, 1968Abstract The reaction of 2-benzylidene-3(2 H )-thianaphthenone-1,1-dioxides (VI) with trialkyl phosphites depends upon the reaction medium. In phenol, compounds having structure VII are produced. In benzene, the 1:1 adducts isolated, wre believed to have a structure similar to X or the corresponding cyclic oxy-phosphorane (XI) which is readily ...
A. Mustafa +3 more
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Biotransformation of organophosphorus compounds
Toxicology, 2001This study reviews current understanding of mechanisms of biotransformation of organophosphorus compounds (OPC). The first part of this article covers chemical aspects of biotransformation describing reactions that lead to activation or detoxication of OPC.
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Organophosphorus compounds–XVIII
Tetrahedron, 1973Abstract Dialkyl phosphites react with 4-triphenylmethyl-1,2-benzoquinone (6) to give dihydroxyphosphonates having structure (7). Trialkyl phosphites, on the other hand, attack the carbonyl oxygen of 6, yielding cyclic unsaturated pentaoxyphosphoranes (17). These are converted into the o-quinol phosphate esters (16) by hydrogen chloride.
M.M. Sidky, F.H. Osman
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Low-Coordinated Organophosphorus Compounds
Phosphorus, Sulfur, and Silicon and the Related Elements, 2002AbstractFor Abstract see ChemInform Abstract in Full Text.
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Tetrahedron, 1972
Abstract Trimethyl and triethyl phosphites react with quinoneimine IV, in aprotic and protic solvents to produce compounds V, VI and VII. The outcome of this reaction depends on the experimental conditions. Triphenyl phosphite, triphenyl-phosphine and phosphorous acid cause the quantitative reduction of IV to VII.
M.M. Sidky, M.F. Zayed
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Abstract Trimethyl and triethyl phosphites react with quinoneimine IV, in aprotic and protic solvents to produce compounds V, VI and VII. The outcome of this reaction depends on the experimental conditions. Triphenyl phosphite, triphenyl-phosphine and phosphorous acid cause the quantitative reduction of IV to VII.
M.M. Sidky, M.F. Zayed
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Mitochondrial dysfunction and organophosphorus compounds
Toxicology and Applied Pharmacology, 2013Organophosphorous (OPs) pesticides are the most widely used pesticides in the agriculture and home. However, many acute or chronic poisoning reports about OPs have been published in the recent years. Mitochondria as a site of cellular oxygen consumption and energy production can be a target for OPs poisoning as a non-cholinergic mechanism of toxicity ...
Somayyeh, Karami-Mohajeri +1 more
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