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  • Electronic Resource  (41)
  • Polymer and Materials Science  (41)
  • 1
    Electronic Resource
    Electronic Resource
    Das kondensationsverhalten hydroxy- und chlormethylierter phenole und anisole mit dimethylphenolen (1973)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 174 (1973), S. 239-242 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1973.021740122
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  • 2
    Electronic Resource
    Electronic Resource
    Untersuchungen zur friesschen verschiebung an hydroxybenzylphenol-derivaten (1974)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 175 (1974), S. 2255-2274 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The Fries rearrangement of the acetates 2a-c, 3b, 4b, and 4d of six hydroxybenzylphenol derivatives was investigated between 40 and 70°C using AlCl3 as catalyst and nitrobenzene as solvent. Besides the expected main products of the Fries rearrangement also intermediates and products formed by side reactions were isolated by column chromatography, showing the partial saponification of ester bonds to be a probable side reaction. The migration of an acetyl group to the neighbouring phenolic unit of the same molecule could not be observed. All the compounds, including the starting substances, were characterized by their IR- and 1H-NMR-spectra.
    Notes: An den Acetaten 2a-c, 3b, 4b und 4d von sechs Hydroxybenzylphenol-Derivaten wurde die Friessche Verschiebung mit AlCl3 als Katalysator in Nitrobenzol bei Temperaturen zwischen 40 und 70°C durchgeführt. Neben den zu erwartenden Hauptprodukten der Friesschen Verschiebung konnte durch Säulenchromatographie eine Reihe von Zwischen- und Nebenprodukten isoliert werden. Daraus ging hervor, daß wahrscheinlich eine teilweise Verseifung der Acetate als Nebenreaktion stattfindet. Eine Wanderung der Acetylgruppe an den benachbarten Phenolbaustein des gleichen Moleküls konnte nicht beobachtet werden. Sämtliche Verbindungen, einschließlich der Ausgangsprodukte, wurden durch ihre IR- und 1H-NMR-Spektren charakterisiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1974.021750803
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  • 3
    Electronic Resource
    Electronic Resource
    Die synthese reiner oligo[(hydroxy-5-nitro-1,3-phenylen)methylen]e, verbindungen mit mehreren ortho- bzw. para-nitrophenol-bausteinen im molekülHerrn Prof. Dr. W. Kern mit allen guten Wünschen zum 70. Geburtstag gewidmet (1976)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 177 (1976), S. 1745-1770 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Chlormethylated nitrophenols as well as mono- and bischloromethylated bis- and tris[(hydroxy-5-nitro-1,3-phenylene)methylene] compounds were used to synthesize oligo[(hydroxy-5-nitro-1,3-phenylene)methylene]s. Chloromethylation was achieved by reaction with chloromethyl methyl ether in the presence of zinc chloride. The synthesis of the oligomeric compounds was possible with good yields by condensation of the chloromethylated compounds with a large excess of nitrophenol and zinc chloride as catalyst. Reaction conditions and different reactivities are reported. The structures of some compounds were confirmed by independent syntheses. Thus, also the structures of those compounds were ensured which are connected by unequivocal preparations with the independently synthesized compounds. All together 47 new oligo[(hydroxy-5-nitro-1,3-phenylene)methylene]s could be prepared, among them 12 dinuclear, 20 trinuclear, 13 tetranuclear and 2 pentanuclear compounds.
    Notes: Zur Synthese der Oligo[(hydroxy-5-nitro-1,3-phenylen)methylen]e dienten chlormethylierte Nitrophenole sowie mono- und bischlormethylierte Bis- und Tris[(hydroxy-5-nitro-1,3-phenylen)methylen]e. Die Chlormethylierung erfolgte durch Umsetzung mit Chlormethylmethyläther in Gegenwart von Zinkchlorid. Die Synthese der Oligomeren gelang mit guten Ausbeuten, wenn die chlormethylierten Verbindungen mit stark überschüssigem Nitrophenol und Zinkchlorid als Katalysator kondensiert wurden. Reaktionsbedingungen und unterschiedliche Reaktionsfähigkeiten werden mitgeteilt. Einige Verbindungen wurden in ihrer Struktur bestätigt, indem sie auf zwei voneinander unabhängigen Wegen dargestellt wurden. Damit waren auch die Strukturen jener Verbindungen gesichert, die in eindeutig verlaufender Synthese mit den doppelt dargestellten Verbindungen zusammenhängen. Insgesamt konnten 47 neue Oligo[(hydroxy-5-nitro-1,3-phenylen)methylen]e synthetisiert werden, darunter 12 Zweikern-, 20 Dreikern-, 13 Vierkern- und 2 Fünfkernverbindungen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1976.021770611
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  • 4
    Electronic Resource
    Electronic Resource
    Intramolekulare Wasserstoffbrückenketten in Oligo(2-hydroxy-1,3-phenylen)methylenen und ihre Bedeutung für die Dissoziationskonstante des Endbausteins (1976)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 177 (1976), S. 2201-2207 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1976.021770724
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  • 5
    Electronic Resource
    Electronic Resource
    A convenient synthesis of α,ω-diamino substituted oligo(oxyethylene)s (1979)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 180 (1979), S. 2539-2542 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1979.021801032
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  • 6
    Electronic Resource
    Electronic Resource
    Eine oligomeranaloge friessche umlagerung oligomerer 2-acetoxy-1,3-phenylenmethylene (1979)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 180 (1979), S. 1859-1864 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: α-Hydro-ω-hydroxypoly(5-chloro-2-hydroxy-1,3-phenylenemethylene)s (1a, b), the oligomeric condensation products from 4-chloro-2,6-bis(hydroxymethyl)phenol and 4-chlorophenol with hydrochloric acid in 1,4-dioxane, could be completely dehalogenated at room temperature and atmospheric pressure with hydrogene/Raney-Ni. The resulting oligomers 2a, b were esterified with acetic anhydride, and the esters 3a, b were subjected to a oligomer analogous Fries rearrangement to form the linear α-hydro-ω-hydroxypoly(5-acetyl-2-hydroxy-1,3-phenylenemethylene)s 4a and 4b. The characterization of the products was mainly done by spectroscopic methods.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1979.021800801
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  • 7
    Electronic Resource
    Electronic Resource
    Darstellung und eigenschaften von copolyamiden mit oxyethylengruppen in definierter sequenz (1982)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 183 (1982), S. 1427-1433 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The polyamides 3-5 were synthesized from α,ω-diamino-substituted oligo(oxyethylene)s (1) and bis-chlorides of dicarboxylic acids (2). As copolymers with defined sequences they contain up to five oxyethylene units per repeating unit. Hereby properties like solubility, thermal stability and complexing ability towards alkali metal cations are influenced.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1982.021830607
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  • 8
    Electronic Resource
    Electronic Resource
    Darstellung und polymerisation von diestern aus 2,2′-methylendiphenolen und acryl-, methacryl- bzw. Crotonsäure (1984)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 185 (1984), S. 1905-1913 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Several mono- and diesters of four selected 2,2′-methylenediphenols with acrylic, methacrylic, and crotonic acid were synthesized for the first time. Special emphasis was paid to the preparation of diesters with two different acyl groups which could be obtained via the corresponding monoesters. The radical polymerization of these esters with AIBN (mainly in benzene) gave insoluble (crosslinked) products from dimethacrylates and soluble (linear) polymers from mixed diesters with methacrylic and crotonic acid, while the dicrotonates are not reactive.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1984.021850912
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  • 9
    Electronic Resource
    Electronic Resource
    Die kristallstruktur von oligo[(2-hydroxy-1,3-phenylen)methylen]en (1984)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 185 (1984), S. 1921-1935 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The crystal structure of three tetranuclear phenolic compounds - 6,6′-bis (2-hydroxy-5-methylbenzyl)-4,4′-dimethyl-2,2′-methylenediphenol (1), 6-(2-hydroxy-3,5-dimethylbenzyl)-6′-(2-hydroxy-5-methylbenzyl)-4,4′-dimethyl-2,2′-methylendiphenol (2), and 6-(3-tert-butyl-2-hydroxy-5-methylbenzyl)-6′-(2-hydroxy-5-methylbenzyl)-4,4′-dimethyl-2,2′-methylene-diphenol (3) -, was determined by single crystal X-ray analysis. Intramolecular hydrogen bonds between all hydroxyl groups of adjacent phenolic units are found for all molecules. They are directed to the opposite end of the molecule by the ortho-methyl or ortho-tert-butyl group in compounds 2 and 3, while no special orientation is found in 1. The conformation of the phenolic units is trans/trans (anti/anti) in 1 and cis/trans (syn/anti) in 2 and 3. Consequently, in the crystal lattice, 2 and 3 form cyclic dimers via intermolecular head-to-tail hydrogen bonds, while the molecules of 1 are arranged to chains of indefinite length by head-to-head and tail-to-tail hydrogen bonds.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1984.021850914
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  • 10
    Electronic Resource
    Electronic Resource
    Darstellung und spektroskopische analyse von oligo{[4-(1,1,3,3-tetramethylbutyl) (bzw. 4-octyl)-2-hydroxy-1,3-phenylen]methylen}en und ihrer Ausgangsverbindungen (1975)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 176 (1975), S. 3295-3315 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: 4-(1,1,3,3-Tetramethylbutyl)phenol and 4-octylphenol, obtained by Fries rearrangement of the corresponding phenyl carboxylates and subsequent reduction of the carbonyl group, were monobrominated in ortho-position and hydroxymethylated with formaldehyde. Originating from these compounds, six 2,2′-methylenediphenol (2a-f) as well as seven 2,6-bis(2-hydroxybenzyl)phenol derivatives (3a-g) were prepared, which have methyl, 1,1,3,3-tetramethylbutyl, and octyl substituents in various ratios in para-position to the phenolic hydroxy groups. The IR- and 1H-NMR-spectroscopical analyses confirmed the assumed structures of the synthesized oligo-nuclear phenolic compounds.
    Notes: 4-(1,1,3,3-Tetramethylbutyl)phenol und 4-Octylphenol, erhalten durch Friessche Verschiebung der entsprechenden Phenylester und anschließende Reduktion der Carbonylgruppe, wurden in ortho-Stellung monobromiert und mit Formaldehyd hydroxymethyliert. Aus diesen Verbindungen konnten sechs 2,2′-Methylendiphenole (2a-f) sowie sieben 2,6-Bis(2-hydroxybenzyl)phenole (3a-g) dargestellt werden, die in 4-Stellung zu den phenolischen Hydroxygruppen Methyl-, 1,1,3,3-Tetramethylbutyl- und Octyl-Substituenten in verschiedenen Verhältnissen enthalten. Die IR- und 1H-NMR-spektroskpischen Analysen bestätigten die angegebenen Strukturen der dargestellten phenolischen Mehrkernverbindungen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1975.021761114
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