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  • 1
    Electronic Resource
    Electronic Resource
    Darstellung von Bis(1-phenoxy-propen-2-yl)-sulfanen aus Bis(1-chlor-3-phenoxy-prop-2-yl)-sulfanen mit Kalium-tert.-butylat - Zuordnung der E,E-Konfiguration (1993)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 335 (1993), S. 669-672 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis of Bis(1-phenoxy-propen-2-yl)-sulfanes derived from Bis(1-chloro-3-phenoxy-prop-2-yl)-sulfanes with Potassium-tert.-butoxid - Determination of the E,E-ConfigurationBis(1-chloro-3-phenoxy-prop-2-yl)-sulfanes (1), anti-MARKOVNIKOV 2:1-adducts of allylphenyl ethers with sulfur dichloride at low temperature are transformed in the presence of potassium-tert.-butoxid by dehydrohalogenation / prototropic rearrangement to phenoxyvinyl sulfanes, the E,E-bis(1-phenoxy-propen-2-yl)-sulfanes 3. Sulfanes 3 are of special interest as a model for unsaturated macrocycles B derivated from dithiacrown ethers A. The configuration was assigned using 1H-n.m.r.- and 13C-n.m.r.-spectroscopy. The molecular structure was determinded by X-ray diffraction techniques. Rearrangement of sulfur-substituted allyl ethers 2 to the propenyl isomers 3a proceeds in a stereospecific manner as for common allyl ethers described in the literature.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19933350803
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  • 2
    Electronic Resource
    Electronic Resource
    Terpenes and terpene derivatives, XXXIV. Synthesis of rac-porosadienone (1995)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1995 (1995), S. 191-193 
    Details
    ISSN: 0947-3440
    Keywords: Porosadienone ; Eudesmane, 6(7→8)-abeo- ; Terpenes ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: (±)-Porosadienone (9) is easily synthesized by starting from (±)-2,6-dimethylcyclohexanone via indenone 1 and dienone 4. All compounds (rac-4-6 and rac-9) with the α,β,γ,δ-dienone system are very prone to air oxidation forming the corresponding mono epoxides rac-7, rac-8, rac-10, and rac-11.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199519950126
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis of some naturally occurring drimane and dinorlabdane derivatives (1995)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1995 (1995), S. 1389-1392 
    Details
    ISSN: 0947-3440
    Keywords: Sesquiterpenes ; Dinorlabdanes ; Drim-8(12)-ene ; Albicanal ; 11-Nordrim-7- and -8-en-12-al ; 15,16-Dinorlabda-8(17), 12-dien-14-al ; Hedychium acuminatum ; Zingiberaceae ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The naturally occurring (ex Hedychium acuminatum) compounds drim-8(12)-ene (1), albicanal (4), (E)-15,16-dinorlabda-8(17), 11-dien-13-one (5), and (E)-15, 16-dinorlabda-8(17), 12-dien-14-al (9), were prepared as racemates by starting from the synthetically available rac-albicanol (2). - The Nozaki reaction of the trimethyldecalone 10 yields 11-nordrim-8-en-12-al (11) and its Δ7 regioisomer 12.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.1995199507187
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    Paper (German National Licenses)
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