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  • Chemistry  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Hydropyrene, alicyclische Modellverbindungen für GC-MS-Untersuchungen (1989)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 331 (1989), S. 267-272 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydropyrenes, Alicyclic Model Compounds for GC-MS InvestigationsHydrogenation of asymmetric and symmetric hexahydropyrene gives the five possible aromatic decahydropyrenes via different octahydropyrenes. From these compounds some dodecahydro- and tetradecahydro-pyrenes, the four isomers of perhydropyrene with chair conformations and five new stereoisomers with twist boat six-membered rings are obtained. The configurations of the hydrogenated pyrenes are assigned using chromatographic retention indices and mass spectrometric fragmentation in combination with force field calculations.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19893310213
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    3H-Selenolo[2,3-d]-1,2-thiol-3-on und 8H-Diselenolo-[3,2-b:2′,3′-e]thiopyran-8-on, zwei neue Ringsysteme (1980)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 1620-1622 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 3H-Selenolo[2,3-d]-1,2-thiol-3-one and 8H-Diselenolo[3,2-b: 2′,3′-e]thiopyran-8-one, Two New Ring SystemsThe two title compounds 1 and 3a are described. They each contain a new heterocyclic ring system. The thiopyran 3a is obtained by refluxing 1 with copper powder in xylene.
    Notes: Die Titelverbindungen 1 und 3a werden beschrieben. Sie enthalten beide ein bisher unbekanntes heterocyclisches Ringsystem. Das Thiopyran 3a entsteht durch Kochen von 1 mit Kupferpulver in Xylol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198019801017
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    Paper (German National Licenses)
    Fulltext
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