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Showing 1 to 20 of 68 for “"organophosphorus"”.
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Thermal degradation of organophosphorus compounds.
As menazon [0,0-dimethyl-S-(4,6-diamino-1,3,5-triazin-2-ylmethyl) phosphorodithioate] is an industrial product, the general information on its chemistry and chromatographic behaviour is contained in research reports of limited circulation. The relevant information has been abstracted from these …
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Respiratory complications of organophosphorus pesticide poisoning
… the majority of which occur in rural Asia with organophosphorus (OP) compounds. These anticholinesterase pesticides cause an acute cholinergic syndrome characterised by decreased consciousness, excessive airway secretions and respiratory failure. A combination of these clinical features is the …
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The Reactivity of Ditetrelenes Towards Organophosphorus Oxides
… 4 and tetramesityldigermene 5 towards organophosphorus oxides was explored in this thesis. The reaction of dialkyl and diarylphosphine oxides and phosphites with ditetrelenes 4 and 5 resulted in a 1,3-addition to form diorganodisilyl and digermyl phosphinites 27, 28, 31, 32 and disilyl …
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Cardiovascular components of organophosphorus-induced delayed neuropathy
… observed prior to the onset of clinical signs of organophosphorus-induced delayed neuropathy (OPIDN) (days 1, 3, and 7) as well as when maximal clinical signs were evident (days 15-21). Significant decreases in the activities of brain NTE and plasma cholinesterase as well as decreases in weight …
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The Molecular Mechanisms of Organophosphorus Compound-induced Cytotoxicity
Certain organophosphorus compounds have the ability to induce a delayed neuropathic condition in sensitive species termed organophosphorus compound-induced delayed neurotoxicity (OPIDN). Esteratic changes associated with OPIDN have been successfully modeled in vitro. The physical characteristics of …
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Competitive Enzyme Immunoassay by Polyclonal Antibodies Against Organophosphorus Pesticides
<p>Organophosphorus compounds (OPs) comprise one of the major classes of pesticides in use today because they are highly effective and less toxic. Because of their extensive use, there is a need for monitoring OPs in water and vegetables. Gas chromatography (GC) is the usual method for OPs …
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Studies on the residue chemistry of some organophosphorus pesticides
… chemistry related to specific studies on two organophosphorus pesticides, viz. Q, Q-diethyl -(K-ethosycarbonyl-8-methylcarbamoylmethyl) phosphorodithioate (common name mecarbam) and 0, G-diethyl S-chloromethyl phosphorodithioate (common name chlormephos). The preparation of a full range of …
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The effects of organophosphorus compounds on the immune system
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
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Developing a synthetic organophosphorus-based disinfectant for Canadian chicken hatcheries
… producers and hatcheries. A library of synthetic organophosphorus compounds possessing antimicrobial activities were evaluated as disinfectants for use in chicken hatcheries. After evaluating compounds 9bWC2, 9bWC3, 9cWC2, 9cWC3, and 10bW in combination with the solvents ethanol, isopropanol, …
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Novel Organophosphorus Oligomers. Synthesis and conformation of α-hydroxy phenylphosphinates
Chapter one reviews the recent progress in the synthesis of phosphonopeptides, pseudopeptides containing a phosphinic, phosphonic or phosphonamide linkage in place of an amide (peptide) linkage. It describes some of the general methods for the synthesis of these pseudopeptides; for example through …
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Carbonyl Catalysis: Hydrolysis of Organophosphorus Compounds and Application in Prebiotic Chemistry
… electrophilic activation via carbonyl catalysis. Organophosphorus compounds are crucially important in many aspects in organic chemistry. Many approaches were developed for asymmetric organophosphorus compounds. In this work, different types of organophosphorus compounds were used as the …
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Studies of organophosphorus compounds by nuclear magnetic resonance spectroscopy with two frequency dimensions
A range of organophosphorus compounds with bicyclic and tricyclic cage structures has been prepared and studied by n.m.r. spectroscopy.
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Studies on Organophosphorus Catalyzed C(SP³)–H Amination for the Synthesis of Benzimidazoles
… This work reports: (1) optimization of organophosphorus-catalyzed C(sp³)–H functionalization; (2) scope studies to benzimidazoles by in situ oxidation of the corresponding dihydrobenzimidazole; and (3) insight into the reaction mechanism through in situ spectroscopic monitoring under …
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Organophosphorus-Catalyzed Reductive Functionalization of Nitrocompounds via P(III)/P(V) Redox Couple
… for direct reductive C–N coupling. This organophosphorus-catalyzed nitro deoxygenative platform was further developed to a tandem C–N coupling/cyclization sequence, yielding a variety N-functionalized azaheterocycles (oxindoles, indoles, quinoxalinediones, and benzimidazoles). Besides …
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Involvement of calcium in organophosphorus-induced delayed neuropathy: a functional morphological, and biochemical study
Organophosphorus compounds are widely used in agriculture as pesticides and in industry as petroleum additives and modifiers of plastics. Some of these compounds are capable of inducing an irreversible neuropathy developing weeks to months after exposure, yet there is no effective treatment. This …
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Cross resistance to organophosphorus compounds in malathion- and diazinon- resistant strains of the German cockroach
… data by a topical application method for eight organophosphorus compounds are given for two laboratory-selected .strains of Blattella p:ermanica ( L.), one resistant to malathion and the other resistant to diazinon. Comparison of this data with similar data for a normal susceptible strain of the …
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