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  • 1985-1989  (9)
  • 1970-1974
  • 1985  (9)
  • 1
    Electronic Resource
    Electronic Resource
    Synthetic Polymers as Drugs (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 446 (1985), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1985.tb18394.x
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  • 2
    Electronic Resource
    Electronic Resource
    Head-to-head polymers — XXXII: Toward head-to-head poly(α-methylstyrene): Synthesis of 2,3-dimethyl-2,3-diphenylbutanediol-1,4-ditosylate and 1,4-diphenyl-2,3-dimethylbutadiene-1,3 (1985)
    Springer
    Monatshefte für Chemie 116 (1985), S. 401-412 
    Details
    ISSN: 1434-4475
    Keywords: Phenonium rearrangement ; Nucleophilic displacement ; Stereoisomers ; 1H- and13C NMR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ausgehend von 2-Phenylpropionsäure (1) wurde 2,3-Dimethyl-2,3-butandiol-1,4-ditosylat (7) symthetisiert. Das Säurechlorid wurde bromiert und zu Methyl-2-phenyl-2-brom-propionat (4) umgesetzt, das mit Zink/Kupfer zu Dimethyl-2,3-dimethyl-2,3-diphenylsuccinat (5) gekuppelt wurde. Reduktion mitLAH zu 2,3-Dimethyl-2,3-diphenylbutandiol (6) und nachfolgende Tosylierung ergab eine Mischung der meso und racemischen Tosylate7a undb, welche in die reinen Isomere aufgetrennt werden konnten (a Fp. 170 °C undb Fp. 121 °C). Die beiden Verbindungen ergaben bei Behandlung mit Tetraalykylammoniumbromid nicht das erwartete 2,3-Dimethyl-2,3-diphenyl-1,4-dibrombutan (9), sondern 1,4-Diphenyl-2,3-dimethyl-butadien-1,3 (8). Das wurde durch unabhängige Synthese von8 auf anderem Wege, Vergleich der spektroskopischen Eigenschaften und mittels Mischschmelzpunkt nachgewiesen.
    Notes: Abstract 2,3-Dimethyl-2,3-diphenylbutanediol-1,4-ditosylate (7) was synthesized starting from 2-phenylpropionic acid (1). The acid chloride was brominated and transformed into methyl 2-phenyl-2-bromo-propionate (4) which was coupled with a zinc/copper couple to dimethyl 2,3-dimethyl-2,3-diphenylsuccinate (5). Reduction with lithium aluminum hydride to 2,3-dimethyl-2,3-diphenylbutanediol-1,4 (6) was followed by tosylation. The tosylate 7 a mixture of the meso and racemic compounds, could be separated into the pure isomers,a m. p. 170 °C andb m. p. 121 °C. The mixture of each individual pure compound, when treated with tetraalkyl-ammonium bromide, did not give the expected 2,3-dimethyl-2,3-diphenyl-1,4-dibromobutane (9) but rather 1,4-diphenyl-2,3-dimethylbutadiene-1,3 (8). The identity of the compound was established by independent unequivocal synthesis, the comparison of spectral characteristics, and mixed melting point.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00799974
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  • 3
    Electronic Resource
    Electronic Resource
    Functional polymers (1985)
    Springer
    Polymer bulletin 14 (1985), S. 245-250 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Polymeric antioxidants prepared from 2,6-di-tertiary-butyl-4-vinyl (4-lsopropenyl)phenol and butadiene or isoprene, and their hydrogenated products (6-8 mol % of phenolic AO in the polymer) were tested by oxygen uptake studies for their effectiveness as antioxidants for polyolefins and polydienes. The polymeric antioxidants seem to be slightly less effective in short-term protection against oxidation at 150° C as compared to low molecular weight antioxidants, but more effective in long-term protection of the polymer samples at a level of 0.1 weight percent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254945
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  • 4
    Electronic Resource
    Electronic Resource
    Haloaldehydep polymers (1985)
    Springer
    Polymer bulletin 14 (1985), S. 535-540 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Fluorochlorobromoacetaldehyde was synthesized in five steps and in 15% overall yield starting from trifluorochloroethylene. Treatment with sodium methoxide gave 1,2-difluoro-2-chloro-1-methoxyethylene which was brominated and the bromination product hydrolyzed with concentrated sulfuric acid to give methyl fluorochlorobromoacetate. Lithium aluminum hydride reduction and hydrolysis of the reaction product gave fluorochlorobromoacetaldehyde hydrate which was dehydrated to the aldehyde. Polymer grade fluorochlorobromoacetaldehyde was polymerized with sulfuric acid to polyfluorochlorobromoacetaldehyde which was characterized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00271612
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  • 5
    Electronic Resource
    Electronic Resource
    Optical activity based on macromolecular asymmetryPart XXVI of Haloaldehyde Polymers; Part XXV : E.G. Brame, A. M. Raevsky, G. K. Semin, G. D. Jaycox, and O. Vogl, Polymer Bulletin 10(11/12), 521 (1983) (1985)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 13 (1985), S. 1-12 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Optically active isotactic polychloral was prepared in which the optical activity comes exclusively from molecular asymmetry (i.e., helical conformation). Molecular asymmetry requires a high conformational energy barrier for the polymer backbone, and an asymmetric initiator to induce a predominance of one helical screw-sense. Polychloral meets the criteria. Asymmetric initiators used to obtain optically active polychloral include tetramethyl ammonium (+)- or (-)-0-acetylmandelate, tetramethylammonium (+)- or (-)-0-methylmandelate, the lithiumalkoxides of methyl (+)- or (-)-mandelate, lithium cholesten-3β-oxide, lithium cholestan-3β-oxide, and lithium (+)- or (-)-2-octanoxide. Using the above initiators at 0.5 mol %, a maximum specific rotation of [α] D25 = 5000 was obtained for polychloral. Errors in specific rotation were typically ±7%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1985.020131985102
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis of poly(ethylene glycol)-bound 3-(5-fluorouracil-1-yl)propanoic acid, its hydrolysis reactivity and antitumor activity (1985)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 6 (1985), S. 815-819 
    Details
    ISSN: 0173-2803
    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/marc.1985.030061205
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  • 7
    Electronic Resource
    Electronic Resource
    Poly(alkylene oxide) ionomers. XI. Polymerization and copolymerization of methyl ω-epoxyundecanoate and characterization of the polymersPart X: J. Muggee and O. Vogl, J. Polym. Sci. Polym. Chem. Ed., 23, 651 (1985). (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 23 (1985), S. 673-701 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Methyl 10-undecenoate was epoxidized in nearly quantitative yield with m-chloroperoxy-benzoic acid to methyl 10,11-epoxyundecanoate. The functional epoxide monomer was polymerized by the reaction product of triethylaluminum/water/acetylacetone (1.0/0.5/1.0) to a high molecular weight elastomer having pendent carboxyl groups, and a molecular weight distribution near the most probable distribution. With the same initiator system, methyl 10,11-epoxyundecanoate was copolymerized with ethylene oxide, propylene oxide, 1-butene oxide, 1-hexene oxide, phenyl glycidyl ether, epichlorohydrin, and 4,4,4-trichloro-1-butene oxide. The copolymers were typically high in molecular weight, elastomeric, and had methyl 10,11-epoxyundecanoate incorporations similar to the initial feed ratio of comonomers. The new family of functional polymers were characterized by their infrared and NMR spectra, dilute solution viscosity and thermal transitions.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.170230307
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  • 8
    Electronic Resource
    Electronic Resource
    Poly(alkylene oxide) ionomers. X. Copolymerization of methyl ω-epoxyalkanoates and characterization of the polymersPart IX: J. Muggee and O. Vogl, J. Polym. Sci. Polym. Chem. Ed., to appear. (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 23 (1985), S. 649-671 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Selected methyl ω-epoxyalkanoates ranging from methyl 3,4-epoxybutanoate to methyl 7,8-epoxyoctanoate were copolymerized with a number of oxiranes and with oxetane. Tetrahydrofuran did not take part in the attempted methyl ω-epoxyalkanote-tetrahydrofuran copolymerization, but acted only as the solvent. The oxirane copolymers had polymer compositions similar to the comonomer feed ratio. Oxirane comonomers used were propylene oxide (1,2-epoxypropane), butylene oxide (1,2-epoxybutane), 1,2-epoxyhexane, epichlorohydrin, and phenylglycidyl ether. The initiator system used was triethylaluminum/water/acetylacetone (1.0/0.5/1.0) in about 5 mol %. In the copolymerizations using methyl 3,4-epoxybutanoate as a comonomer, only small yields of polymer (in the range of 1 to 2%) were realized, while for methyl 4,5-epoxypentanoate the yields were generally in the range of 20 to 60%. Methyl 7,8-epoxyoctanoate copolymerized readily and gave yields of copolymers of 50 to 90%.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.170230306
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  • 9
    Electronic Resource
    Electronic Resource
    Poly(alkylene oxide) ionomers. XII. Hydrolysis of polymers and copolymers of methyl 10,11-epoxyundecanoatePart XI: D. A. Bansleben and O. Vogl, J. Polym. Sci. Polym. Chem. Ed., 23, 675 (1985). (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 23 (1985), S. 703-721 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ester-substituted oxyethylene polymers and copolymers of methyl 10,11-epoxyundecanoate were prepared with an aluminumalkyl-water coordination initiator system modified with acetylacetone. Poly(ethylene oxide) ionomers, polyelectrolytes, and polycarboxylic acids were obtained by alkaline hydrolysis of the pendant carbomethoxy groups and by neutralizations with acetic acid. The high molecular weight substituted poly(ethylene oxide)s were characterized by spectral, thermal, and dilute solution measurements. The infrared spectra of carboxylate substituted poly(ethylene oxide)s, both homo- and copolymers, show the typical shifts in the carboxyl absorption when going from the ester to the carboxylate group to the free acid. Polymer transitions temperatures, as measured by DSC, changed accordingly. Wide-angle x-ray diffraction measurements strongly suggest the existence of ionic domains in the oxyethylene polymer matrix. Dilute solution properties of the ionomers show typical polyelectrolyte behavior, including a substantial change in viscosity when ionic solute is added.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.170230308
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