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  • Organic Chemistry  (8,086)
  • Wiley-Blackwell  (8,086)
  • 1980-1984  (3,406)
  • 1965-1969  (3,129)
  • 1945-1949  (1,551)
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Publisher
  • Wiley-Blackwell  (8,086)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 699 (1966), S. 98-106 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Vom Chinolin ausgehend werden Chinolin-carbaldehyd-(3) und einige seiner Substitutionsprodukte synthetisiert. Die Aldehyde dienen zur Darstellung pharmazeutisch interessanter Chinolinderivate.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 728 (1969), S. 144-151 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Absolute Configuration of I+)- and {-)-2-Amino-tetralin and of the four Isomeric 2-Amino-tetralols- ( I )Maintaining its configuration, L-(+)-aspartic acid is converted to (-)-(2S)-2-amino-tetralin, and its absolute configuration thus determined. The hydrogenolysis of three of the four isomeric 2-amino-tetralols-(1) 7a, 7b, and 7c with Pd led to the optically pure (+)- and (-)-2-amino-tetralins (6a and 6b), which allows one to make a definite statement regarding the steric structure of the levo- and dextrorotatory cis- and trans-2-amino-tetralols-(1). It could be shown that, contrary to previous assumptions, based on CD-spectra, (+)-(1S, 2R)-2-amino-tetralol-(1) (7c) does not have the same absolute configuration as L-(-)-ephedrine, with the absolute configuration (1R, 2S). Therefore for arylaminoethanols, it is not possible to correlate the open-chained and cyclic compounds to one another by means of the CD-spectraalone.
    Notes: 1.-(+)-Asparaginsäure wird unter Erhaltung ihrer Konfiguration in (-)-(2S)-2-Amino-tetralin umgewandelt und damit dessen absolute Konfiguration festgelegt. Durch Hydrogenolyse von drei der vier isomeren 2-Amino-tetralole-(1) 7a, 7b, 7c mit Palladium werden (+)- und (-)-2-Amino-tetralin (6a und 6b) optisch rein erhalten, was Rückschlüsse auf die räumliche Struktur der links- und rechtsdrehenden cis- und trans-2-Amino-tetralole-(1) zuläßt. Es zeigt sich, daß entgegen früheren Annahmen, denen circulardichroitische Messungen zu Grunde lagen, (+)-(1S, 2R)-2-Amino-tetralol-(1) (7c) nicht dieselbe absolute Konfiguration besitzt wie L-(-)-Ephedrin mit der absoluten Konfiguration (1R, 2S). Es ist daher bei Arylaminoäthanolen nicht möglich, ohne weiteres durch CD-Spektren offenkettige und cyclische Verbindungen einander zuzuordnen.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 964-972 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Investigations on the Thermal Decomposition of n-Dodecylcyclopentane in the Gas PhaseIn the thermal decomposition of n-dodecylcyclopentane at 670 and 750°C in a laboratory tubular reactor mixtures of hydrogen and 57 and 113 hydrocarbons respectively are formed. The mixtures have been analyzed and identified by capillary gas chromatography and by mass spectrometry. The distribution of the reaction products is used for mechanistic discussions.
    Additional Material: 2 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 66-74 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Kinetic Investigations of the Pyrolysis of Mono-n-alkyl-cyclohexanesThe thermal decomposition of cyclohexane and six mono-n-alkylcyclohexanes was studied kinetically in a metallic laboratory tubular reactor at 650 to 850°C and atmospheric pressure.Kinetic parameters were found to be a function of length of the alkylic side chain. A comparison with analogous parameters of n-paraffins and the unsubstituted cyclohexane allowed the conclusion that C—C-scission in the alkylic chain is the initial reaction in pyrolysis of n-alkylcyclohexanes followed by radical attacks to all C—H-bonds of the feed molecules.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 49 (1966), S. 2594-2597 
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: From cultures of Myrothecium roridum TODE ex FRIES 2′-dehydroverrucarin (1) was isolated. 1 is a genuin metabolite of the micro-organism.
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 48 (1965), S. 840-857 
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The structure of verrucarin A (1) has been confirmed by a stepwise oxidative degradation of mono-O-acetyl-β-epoxy-verrucarin (6).
    Additional Material: 6 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 52 (1969), S. 2449-2458 
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis of the hitherto unknown 14-epi-digitoxigenin (8) and of 3-deoxy-digitoxigenin (16) is described. The 15,15-propylene-thio-sulfoxides 6 and 7 proved to be valuable intermediates. The results of the cardiotonic activity (ATPase test) of the cardenolides 8 and 16 are reported.
    Additional Material: 2 Tab.
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  • 8
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 33 (1966), S. 307-308 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: P-Aminophenylessigsäure läßt sich in einfacher Weise gewinnen, in dem man das Natriumasalz der p-Nitrophenylessigsäure mit Hydrazin in wäßriger Lösung unter katalytischer Einwirkung von RANEY-Nickel umsetzt. Die erzielten Ausbeuten sind praktisch quantitativ.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 35 (1967), S. 175-176 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 2,2′-Bichinolin wird durch Decarboxylierung von 2,2′-Bicinchoninsäure im Vakuum unter Schutzgas in ausgezeichneter Ausbeute und hoher Reinheit erhalten. Die zur Erleichterung der Kohlendioxid-Abspaltung eingesetzte Trägersubstanz dient hierbei gleichzeitig als Lösungsmittel für das entstandene Reaktionsprodukt.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 717 (1968), S. 73-79 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der thermischen Zersetzung des 6-Methoxy-1.3-di-tert.-butyl-chinolhydroperoxids (5) entstehen als Hauptprodukte Sauerstoff, 4.6-Di-tert.-butyl-resorcin-monomethyläther (7) und 5-Methoxy-2-tert.-butyl-benzochinon (11), als Nebenprodukte der tert.-Butyläther 13a sowie zwei Biphenyl-Derivate 9 und 10a. Demnach beginnt der Zerfall sowohl durch Homolyse der C-OO- als auch der O-O-Bindungen, und es treten freie Phenoxyl-Radikale als Zwischen-produkte auf. Die durch Säure bewirkte Abspaltung von Isobuten und Wasser aus 5 führt heterolytisch zu 11.
    Additional Material: 1 Tab.
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