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  • Wiley-Blackwell  (113)
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  • 1
    Electronic Resource
    Electronic Resource
    Folgeprodukte halogenierter Aldehyde. XIV [1]. Synthesen mit 1,2,2,2-Tetrachlorethylisocyanat (1978)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 625-633 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Derivatives of Halogenated Aldehydes. XIV. Reactions of 1,2,2,2-Tetrachloroethyl Isocyanate1,2,2,2-Tetrachloroethyl isocyanate 2 reacts with alcohols or phenols to form the N-tetrachloroethyl-O-alkyl(aryl) urethanes 3-6. With thioalcohols and thiophenols the corresponding thiourethanes 11-12 are obtained. In these compounds the chlorine in position 1 can be substituted by treatment with a nucleophilic compound in the presence of a base by way of an elimination addition mechanism. In these reactions the compounds 7-10 and 13-14 are formed. Amines attack 2 at both active centres to give the substituted ureas 15-18. Diphenyl amine, some carboxylic acid amides and benzazoles, however, react only with the isocyanate group to form the compounds 19-25. Reactions of 2-amino-benzazoles, 2-amino-pyridine and amidines with 2 yield the heterocyclic compounds 26-31.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19783200416
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  • 2
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    Seasonal growth of wild Atlantic salmon juveniles and implications on age of smoltification (2006)
    Wiley-Blackwell
    In:  Journal of Fish Biology, 67 . pp. 1585-1602.
    Details
    Publication Date: 2017-09-14
    Description: The seasonal growth trajectories of wild Atlantic salmon Salmo salar juveniles by age group within the Margaree River, Canada, are described. Circuli counts from scales were used to infer growth rates at different ages and these were used to predict the proportions of age 2‐ and 3‐year old smolts from different portions of the watershed. In the wild Atlantic salmon juveniles from the Margaree River, there was no bimodality in fork length frequencies and no 1 year old smolts were produced. Water temperature differences during the growing season were insufficient to explain the differences in growth rates and size at age among the sites sampled. There was a positive association between the growth rate in the first year and the subsequent age at smoltification. In the Margaree River, differences in tributary specific growth rates and size at age were expected to produce important differences in the relative ages at smoltification.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 3
    Electronic Resource
    Electronic Resource
    Removal of liquid from a packed column of spherical beads under centrifugal force (1973)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 19 (1973), S. 991-998 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Surface sulfonated copolymer beads and glass beads of various size distributions were used to study the removal of liquid from a packed column of spherical beads under centrifugal force. At low forces, from 1 G to approximately 20 G, the volume of liquid retained corresponds to the free volume between the packed beads. The liquid level varies with force from about 20 to 400 G. It is shown that the liquid level is a function of the force applied and the size distribution of the beads in the column. At forces from approximately 400 to 1200 G the weight of the liquid on the sample remains constant.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690190516
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  • 4
    Electronic Resource
    Electronic Resource
    Estimating the relative acid site density of silica-alumina by infrared spectroscopy using a selective reactant poison (1987)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 33 (1987), S. 336-340 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690330226
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  • 5
    Electronic Resource
    Electronic Resource
    The critical properties of n-alkanes using a low-residence time flow apparatus (1989)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 35 (1989), S. 1829-1834 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A low residence time flow method for the measurement of the critical temperatures and pressures of thermally-unstable fluids was developed in this work. The low residence time at elevated temperatures minimizes decomposition and other reactions, making it possible to measure the critical properties of many unstable fluids. An extrapolation procedure was developed to obtain the critical properties of rapidly reacting substances, based on the linear behavior of the apparent critical property with residence time. The measured critical properties of 14 n-alkanes (pentane through octadecane) using this method are reported in this paper. The results extend the available data on the critical properties of the higher alkanes and reveal a possible error in the literature value for the critical pressure of tetradecane.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690351109
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  • 6
    Electronic Resource
    Electronic Resource
    Über die Entstehung normaler Uranate beim Erhitzen von UO3 mit Metalloxyden (1926)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 156 (1926), S. 20-26 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19261560104
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  • 7
    Electronic Resource
    Electronic Resource
    Acid-catalyzed Cyclization of the Ene-Product Derived from α-Pinene and PTAD (1984)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 1977-1979 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Säurekatalysierte Cyclisierung des En-Produkts aus α-Pinen und PTADAluminiumchlorid-katalysierte Reaktion des En-Produkts 2 aus 4-Phenyl-4H-1,2,4-triazol-3,5-dion (PTAD) und α-Pinen (1), des 1-(6,6-Dimelthyl-2-methylenbicyclo[3.1.1]hept-3-yl)-4-phenyl-1,2,4-triazolidin-3,5-dions, ergab 3,8,8-Trimelthyl-N-phenyl-4,5-diazatricyclo[4.2.1.03,7]nonan-4,5-dicarboxamid (6) in 78% Ausbeute. Auch Bortrifluorid-etherat, trockener Chlorwasserstoff und p-Toluolsulfonsäure katalysieren die Cyclisierung von 2 zu 6, aber nicht in diesem Maße. Der Mechanismus der Cyclisierung wird über eine Gerüstumlagerung der Carbenium-Ionen-Zwischenstufen gedeutet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19841170527
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  • 8
    Electronic Resource
    Electronic Resource
    Stabile Quecksilber(I)-Selen-Verbindungen, 1. Synthese und Struktur des Tetrakis(diphenylseleno)diquecksilber(I)-diperchlorats, Synthese von Bis(diphenylseleno)diquecksilber(I)-dinitrat (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3291-3296 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stable Mercury(I)-Selenium Compounds, 1. Synthesis and Structure of Tetrakis(diphenylseleno)dimercury(I) Diperchlorate, Synthesis of Bis(diphenylseleno)dimercury(I) DinitrateThe new compounds 1 and 2 have been prepared by the reaction of diphenyl selenide with mercury(I) nitrate or perchlorate in methanolic solution. As shown by an X-ray analysis the structure of compound 1 contains the groups [(C6H5)2Se]2Hg-Hg[Se(C6H5)2]2 and O-coordinated ClO4⊖-anions. Compound 2 contains only 2 mol of diphenyl selenide for 1 mol of Hg2(NO3)2.
    Notes: Durch Umsetzung methanolischer Lösungen von Quecksilber(I)-nitrat bzw. -perchlorat mit Lösungen von Diphenylselenid in Methanol wurden die neuen Verbindungen 1 und 2 dargestellt. Nach röntgenographischen Untersuchungen liegen in 1 die Gruppen [(C6H5)2Se]2Hg—Hg[Se(C6H5)2]2 neben über ein O-Atom koordinierten ClO4⊖-Anionen vor. Die Verbindung 2 enthält nur 2 mol Diphenylselenid auf 1 mol Hg2(NO3)2.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771101007
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  • 9
    Electronic Resource
    Electronic Resource
    Cycloaddition of Singlet Oxygen and 4-Methyl-4H-1,2,4-triazole-3,5-dione to 7-Adamantylidene-1,3,5-cycloheptatriene and Derivatives (1984)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 2393-2408 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cycloaddition von Singulettsauerstoff und 4-Methyl-4H-1,2,4-triazol-3,5-dion an 7-Adamantyliden-1,3,5-cycloheptatrien und Derivate7-Adamantyliden-1,3,5-cycloheptatrien (18) wurde mittels Thermolyse des Thietans 22 hergestellt, welches wiederum durch Cycloaddition von 2-Adamantanthion mit 8-Oxoheptafulven (1) erhalten wurde. In dieser Reaktion wurde zusätzlich das Thiophen 23 erzeugt, anscheinend durch [8 + 2]-Cycloaddition. Die Addition von Singulettsauerstoff (1O2) an Heptafulven 18 führte zum [4 + 2]-Tropiliden-endoperoxid 24, während mit 4-Methyl-4H-1,2,4-triazol-3,5-dion (MTAD) das [8 + 2]-Urazol 26 gebildet wurde. Singulettsauerstoff-Addition an Thietan 22 ergab das [4 + 2]-Tropiliden-endoperoxid 27, aber mit MTAD wurde das gespannte [4 + 2]-Norcaradien-urazol 28 erhalten. Das Thiophen 23 führte mit 1O2 und mit MTAD zu den [4 + 2]-Norcaradienprodukten 29 bzw. 30, wovon die Struktur von 30 durch Röntgenstrukturanalyse ermittelt wurde.
    Notes: 7-Adamantylidene-1,3,5-cycloheptatriene (18) was prepared via thermolysis of the thietane 22, produced in the cycloaddition of 2-adamantanethione with 8-oxoheptafulvene (1). The latter reaction also afforded the thiophene 23, presumably via [8 + 2]-cycloaddition. Reaction of singlet oxygen (1O2) with heptafulvene 18 gave the [4 + 2]-tropilidene endoperoxide 24, while 4-methyl-4H-1,2,4-triazole-3,5-dione (MTAD) led to the [8 + 2]-urazole 26. Singlet oxygenation of thietane 22 produced the [4 + 2]-tropilidene endoperoxide 27, but with MTAD the strained [4 + 2]-norcaradiene urazole 28 was obtained. The thiophene 23 gave with 1O2 and MTAD the [4 + 2]-norcaradiene products 29 and 30, respectively. X-ray analysis confirmed the urazole 30 structure.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19841170711
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  • 10
    Electronic Resource
    Electronic Resource
    Linear phenol-formaldehyde polymers - condensation of p-chlorophenol with formaldehydePresented in part before the Division of Polymer Chemistry at the 122nd Meeting of the American Chemical Society, Atlantic City, N. J., September, 1952. (1956)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 20 (1956), S. 75-88 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: High molecular linear polymers were prepared by the condensation of p-chlorophenol with formaldehyde at 150°C. for 24 hours in a closed system with bis(2-ethoxyethyl) ether as solvent and p-toluenesulfonic acid as catalyst. The importance of reaction variables including temperature, time, solvent, catalyst, and concentration and ratio of reactants was studied. Polymers of this type were also prepared by the polymerization of 4-chloro-2-hydroxymethylphenol and by the condensation of p-chlorophenol with 2,6-bis(hydroxymethyl)-4-chlorophenol. Data obtained on the polymers from the three independent routes indicated the presence of methylene bridges between the ortho position of the p-chlorophenol residues. The polymers were soluble in N,N-dimethyl formamide and reacted readily with acetic anhydride to form the corresponding acetylated derivatives.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1956.120209407
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