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  • Bischler-Napieralski reaction  (3)
  • Fullerenes  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A Novel Approach to the Synthesis of Endohedral Fullerenes as Demonstrated by Endohedral Barium Fullerenes (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1761-1764 
    Details
    ISSN: 0009-2940
    Keywords: Endohedral ; Barium ; Fullerenes ; Dibarium fullerenes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new route to endohedral fullerenes involving the evaporation of carbon and a metal at different positions, i.e. at different temperatures, in a radio-frequency furnace is described. For the first time, endohedral barium fullerenes within the composition range Ba@C74 to Ba@C136 have been produced in high yields as compared to hollow fullerenes, and have been extracted with CS2. Ba@C60, and Ba@C70, are only soluble in CS2 following sublimation. Furthermore, the first nonlanthanoid dimetallo fullerenes ranging in composition from Ba2@C88 to Ba2@C116 have been obtained. All endohedral barium fullerenes were characterized by mass spectrometry. Properties such as sublimation behaviour, solubility, and sensitivity to air have been studied.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971301209
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Synthese und Konformation von Hexahydro-isochino[1,2-b][3]benzazepinen (1997)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1997 (1997), S. 447-457 
    Details
    ISSN: 0947-3440
    Keywords: Isoquino[1,2-b][3]benzazepines ; Iso-C-homoberbines ; Conformation analysis ; Bischler-Napieralski reaction ; Methyl ∊-hydroxycarboxylates ; Heterocycles ; Alkaloids ; Drug research ; Medicinal chemistry ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Conformation of Hexahydro-isoquino[1.2.-b][3]benzazepinesThe synthesis of the six hexahydro-isoquino[1,2-b][3]benzazepines 13a-f is described; their conformation is investigated by NMR spectroscopic methods, X-ray analysis and dehydrogenation with mercury(II) acetate.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199719970225
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Synthese und Konformation von Hexahydro-isochino[3,2-a][2]benzazepinen des B-Homoberbin-TypsHerrn Prof. Dr. Felix Zymalkowski aus Anlaß seines 40. Dozentenjubiläums gewidmet. (1995)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1995 (1995), S. 567-574 
    Details
    ISSN: 0947-3440
    Keywords: Isoquino[3,2-a][2]benzazepines ; B-Homoberbines ; Bischler-Napieralski reaction ; Calculations, MMX force-field ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Conformation of Hexahydro-isoquino[3,2-a][2]benzazepines of the B-Homoberbine TypeThe two-step synthesis of the hexahydro-isoquino[3,2-a][2]-benzazepines („B-homoberbines“) 4b-e is described. The main and some further products of the Bischler-Napieralski reaction of hydroxyamide 3c were isolated and identified. The conformation of the B-homoberbines was investigated by X-ray analysis, spectroscopic methods and dehydrogenation with mercury(II) acetate.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199519950377
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  • 4
    Electronic Resource
    Electronic Resource
    Aufbau und Konformation der Hexahydro-isochino[2,1-b][2]benzazepine (1994)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1994 (1994), S. 1135-1142 
    Details
    ISSN: 0170-2041
    Keywords: Isoquino[2,1-b][2]benzazepines ; C-Homoberbines ; Bischler-Napieralski reaction ; Conformation studies of the homoberbines ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Conformation of the Hexahydro-isoquino[2,1-b][2]benzazepinesThe synthesis of Hexahydro-isoquino[2,1-b][2]benzazepines 6a-c in a three-step reaction is reported; their conformation is investigated by spectroscopic methods, X-ray analysis and dehydrogenation with mercury(II) acetate.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199419941114
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Bildung von Fullerenen und endohedralen Metallofullerenen: Darstellung im Hochfrequenzofen (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 689-693 
    Details
    ISSN: 0044-2313
    Keywords: Fullerenes ; endohedral metallofullerenes ; preparation ; thermodynamics of formation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation of Fullerenes and Endohedral Metallofullerenes: Preparation in a Radiofrequency FurnaceA thermodynamic analysis of the reaction of formation is presented for C60. The alternative route for the preparation of fullerenes by evaporating carbon in a RF-furnace is described. This process is characterized by its broad variability and by comparatively mild conditions which, in addition, may be measured and controlled rather precisely. Thus, it offers favorite facilities for the production of soots with high contents of fullerenes and endohedral fullerenes. So far, LaC82 could be extracted using toluene.
    Notes: Eine thermodynamische Analyse der Bildungsreaktion von C60 wird gegeben und die Darstellung von Fullerenen im Hochfrequenzofen beschrieben. Dieses neue Verfahren zeichnet sich durch eine hohe Variabilität und vergleichsweise schonende Bedingungen aus, die gut meß- und kontrollierbar sind. Es bietet daher günstige Voraussetzungen zur Herstellung von Rußen mit gesteigerten Anteilen höherer Fullerene und, im Falle von Coverdampfungen, endohedraler Metallofullerene. Bisher konnte in Toluolextrakten LaC82 nachgewiesen werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210432
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