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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 126 (1995), S. 1151-1159 
    ISSN: 1434-4475
    Keywords: Allene ; 2,2-Dimethylpenta-3,4-dienal ; Hydrazones ; Spectroscopy ; X-ray structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Herstellung einiger neuer 2,2-Dimethylpenta-3,4-dienal — Derivate durchClaisen-Cope — Umlagerung der Pyrolyseprodukte der entsprechenden Acetale und anschließende Kondensationsreaktion wird beschrieben. Die Synthese des Homoallenlketons5 durchGrignard — Reaktion und darauffolgende Oxidation des gebildeten Alkohols mit Kaliumchlorochromate (KCC) wird vorgestellt. Alle neuen Verbindungen werden mittels IR-, MS-,1H- und13C-NMR-Spektroskopie charakterisiert. Die NMR — Signale werden mittels C, H-Korrelationsexperimenten (direkt und long-range) eindeutig zugeordnet. Die Struktur von 2,2-Dimethylhexa-3,4-dienal-2,4-dinitrophenyl-hydrazon in Lösung und im Kristall wird diskutiert.
    Notes: Summary The preparation of some new 2,2-dimethylpenta-3,4-dienal derivatives starting byClaisen-Cope rearrangement of the pyrolytic product of the corresponding acetales and followed by condensation reactions is described. The synthesis of homoallenylketone5 from homoallenylaldehyde3 byGrignard reaction and followed by the oxidation of the formed alcohol using potassium chlorochromate (KCC) is reported. All new compounds are characterized by IR, MS,1H, and13C NMR spectroscopy. The full assignment of the NMR signals is based on HETCOR and FLOCK pulse sequences. The molecular and crystal structure of 2,2-dimethylhexa-3,4-dienal 2,4-dinitrophenylhydrazone is presented.
    Type of Medium: Electronic Resource
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