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AbstractAbstract
[en] Interactions between iodozoflurosulfate and fluorine-containing olefins of norbornane series have been studied. Occurrence of frame rearrangements and participation of external nucleophils in the reactions suggest a high electrophilicity of iodozofluorosulfate. In the course of the reactions iodineamides and iodine perchlorates are formed and thus iodozoflurosulfate can be considered as an effective reagent for their synthesis. 21 refs.; 2 tabs
Original Title
Reaktsii iodozoftorsul'fata s ftorsoderzhashchimi olefinami norbornanovogo ryada
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[en] The contrast production for the chemical elements with the atomic numbers Z=1-83 were determined by computer-tomography. With the formula relation of the Δ-number and the atomic number can one compute the contrast production of any chosen chemical compound. Iodine-free and inorganic iodine-containing contrast media are examined for their contrast production and compared with presently used organic iodine-containing contrast media. The contrast enhancement of organic contrast media in tissue are discussed. (orig.)
[de]
Fuer die Elemente mit den Ordnungszahlen Z=1-83 wurde deren Kontrastgebung in der Computer-Tomographie bestimmt. Mit dem formelmaessigen Zusammenhang zwischen Δ-Nr. und Ordnungszahl berechnet man fuer jede beliebige chemische Verbindung deren Kontrastgebung. Es werden nicht-iodhaltige und anorganisch-iodhaltige Kontrastmittel auf ihre Kontrastgebung hin untersucht und mit den zur Zeit verwendeten organisch-iodhaltigen verglichen. Die Kontrastgebung organischer Kontrastmittel im Gewebe wird diskutiert. (orig.)Original Title
Experimentelle Untersuchungen zur Kontrastgebung der Elemente mit den Ordnungszahlen 1-83 im Computer-Ganzkoerper-Tomogramm
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Journal Article
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Strahlentherapie; v. 155(2); p. 117-125
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Vasharov, L.; Norseev, Yu.V.; Nyan, D.D.; Khalkin, V.A.
Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Nuclear Problems
Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Nuclear Problems
AbstractAbstract
[en] Results of studying nucleophilic replacement reactions in the systems of C6H5Br(42.5 mol %) -C6H4DrX(42.5 mol %)-C4H9NH2 (15 mol %)-At-(I-) where X=CH3, F, Cl and NO2 in meta- and para-positions are presented. The reactions proceeded during an hour at 210+-0.1 deg C. To determine yields of reaction products containing radiohalogens a gas-chromatographic technique of analysis with the activity detection by a scintillation counter was used. It is shown that the relative yields of astatobenzenes, beside p-nitrobenzene correlates with the Hammett σ constants lg([XC6H4At(I)]/(C6H5At(I)])=rho x Σ. For astatobenznes the reaction parameter rho=0.59; for iodobenzenes rho=0.0 rho values permit to conclude that there is a two-stage process of nucleophilic replacement of bromine by astatine and iodine in bromobenzenes in the presence of amine
[ru]
Original Title
Vliyanie zamestitelej na reaktsii nukleofil'nogo zameshcheniya broma astatom i jodom v meta- i para-zameshchennykh brombenzolakh
Source
1981; 4 p; 12 refs.; 1 fig.; 1 tab.; submitted to the journal Radiochim. Radioanal. Lett.
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AbstractAbstract
[en] Iodine-catalyzed reactions of a variety of cyclic 1,3-dicarbonyls with 3-metyl-2-butenal and 1-cyclohexene-1-carboxaldehyde are carried out in refluxing methylene chloride to yield the 2H-pyrans. This methodology has been applied to the synthesis of biologically interesting and naturally occurring pyranoquinolinone alkaloids such as flindersine, N-methyl-flindersine, haplamine, and N-methylhaplamine in moderate yields. 2H-Pyrans are important core units in a number of natural products and also in photochromic materials. The molecules bearing 2H-pyrans have a variety of interesting biological activities and potential medical applications. 2H-Pyrans were prepared earlier using piperidine or BF3-Et2O as a catalyst. We have been developed the methodologies for the synthesis of 2H-pyrans through indium(III) chloride- or EDDA-catalyzed formal [3+3] cycloaddition as a Lewis acid or a Brφnsted acid and base catalyst. Later, novel approaches for the synthesis of 2H-pyrans were also developed by other groups using TiCl4, and In(OTf)3 Lewis acids as a catalyst and phosphoric acid as a Brφnsted acid catalyst. Although several synthetic approaches for constructing 2H-pyrans derivatives have been reported by us and other groups, more simple and cost-effective approaches are still demand because of their importance
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38 refs, 5 figs, 1 tab
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Journal Article
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Bulletin of the Korean Chemical Society; ISSN 0253-2964;
; v. 30(11); p. 2833-2836

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AbstractAbstract
[en] The role of halogen atom as a reaction centre in reactions of organic and inorganic halogen derivatives was considered. It is shown that many of the reactions actually proceed by substitution mechanism in halogen atom rather than in carbon or metal atoms as was assumed earlier. Reasons for increase in reactivity from fluorine- to iodine-derivatives, as well as in the opposite direction, are formulated
Original Title
Ehlektrofil'noe, radikal'noe i nukleofil'noe zameshchenie u galogena kak reaktsionnogo tsentra
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AbstractAbstract
[en] In the framework of development of a unified system of electron and steric effects of ligand conical angles of 176 compounds R2X and RHal, where X=O, S, Se, Te; Hal=F, Cl, Br, I; R=H, Hal (only in the case of R2X), Alk or Ar, were calculated. A levelling effect of large X and Hal was pointed out: in the beginning of steric series the conical angles are determined by dimensions of X and Hal and not by R ones. Similar levelled values of conical angles for previously considered ligands on the basis of N, P, As, Sb, Bi, C, Si, Ge, Sn were also calculated
Original Title
Konicheskie ugly ligandov - soedinenij ehlementov 6(6) i 7(17) grupp. Ehffekt nivelirovaniya
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AbstractAbstract
[en] The 13 C NMR chemical shifts of the α, β, γ and δ carbons of 17 sets of aliphatic halides (F, Cl, Br and I), including mono, bi and tricyclic compounds, can be reproduced by a linear equation composed with two constants and two variables: δRX = A* δR-X2, where A and B are constants derived from multilinear regression of 13 C chemical shifts observed; δR-X, the chemical shifts of aliphatic halide (R-X); and δR-X1, δR-X2 the chemical shifts of other halides. It was observed a better correlation for aliphatic bromides (R-X) by using data of aliphatic fluorides (R-X 1) and aliphatic iodides (R-X 2), resulting R2 of 0.9989 and average absolute deviation (AVG) of 0.39 ppm. For the chlorides (R-X), the better correlation was observed by using data of bromides (R-X 1) was observed better correlation with data of bromides (R-X 1) and iodides (R-X 2), R2 of 0.997 and AVG of 1.10 ppm. For the iodides (R-X) was observed better correlation with data of fluorides (R-X 1) and bromides (R-X 2), R2 of 0.9972 and AVG of 0.60 ppm. (author)
Original Title
Relacoes lineares multiplas entre deslocamentos quimicos em RMN 13 C de haletos alifaticos
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14 refs., 2 tabs.
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GARVIN, L.J.; JENSEN, M.A.
Fluor Hanford, Richland, WA (United States). Funding organisation: ENVIRONMENTAL MANAGEMENT (United States)
Fluor Hanford, Richland, WA (United States). Funding organisation: ENVIRONMENTAL MANAGEMENT (United States)
AbstractAbstract
[en] This document summarizes safety management programs used within the scope of the ''Project Hanford Management Contract''. The document has been developed to meet the format and content requirements of DOE-STD-3009-94, ''Preparation Guide for US. Department of Energy Nonreactor Nuclear Facility Documented Safety Analyses''. This document provides summary descriptions of Fluor Hanford safety management programs, which Fluor Hanford nuclear facilities may reference and incorporate into their safety basis when producing facility- or activity-specific documented safety analyses (DSA). Facility- or activity-specific DSAs will identify any variances to the safety management programs described in this document and any specific attributes of these safety management programs that are important for controlling potentially hazardous conditions. In addition, facility- or activity-specific DSAs may identify unique additions to the safety management programs that are needed to control potentially hazardous conditions
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13 Apr 2004; 164 p; DE-AC--06-96RL13200; AC--06-96RL13200; Available from PURL: https://www.osti.gov/servlets/purl/823760-WBGjq4/native/
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AbstractAbstract
No abstract available
Original Title
Sorbtsiya ioda v apparatakh s tsirkuliruyushchim sloem ionita
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For English translation see the journal Sov. Chem. Ind.
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Journal Article
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Khim. Prom-st'; (no.2); p. 128-129
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AbstractAbstract
No abstract available
Original Title
Zur Druck-Kristallchemie der Seltenerd-Trihalogenide
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Source
Gesellschaft Deutscher Chemiker, Frankfurt am Main (Germany, F.R.); p. CA77-CA82; 1979; p. CA77-CA82; Meeting of chemical lecturers; Darmstadt, Germany, F.R; 26 - 29 Mar 1979; INKA-CONF--79-349-002; Short communication only.
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