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  • Articles: DFG German National Licenses  (5)
  • Inorganic Chemistry  (4)
  • Butadienetetracarboxylic acid, 2,3-dihydroxy-  (1)
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  • Articles: DFG German National Licenses  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Zur Wertbestimmung von Adsorbentien (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 168 (1927), S. 61-72 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wird gezeigt, daß zur Beurteilung der Wirksamkeit von Adsorbentien, speziell von Kieselsäuregelen, gegenüber Dämpfen die zumeist übliche Bestimmung des sogenannten Sorptionsmaximums als nicht ausreichend angesehen werden muß, sondern daß vielmehr die Aufnahme einer vollständigen Sorptions- und Desorptionskurve erforderlich ist, wenn man über die Eignung der einzelnen Adsorbentien, beispielsweise zu bestimmten technischen Zwecken, ein vollgültiges Urteil gewinnen will.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19271680111
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Derivate der Oxalyldimalonsäure (1994)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1994 (1994), S. 1121-1127 
    Details
    ISSN: 0170-2041
    Keywords: Butadienetetracarboxylic acid, 2,3-dihydroxy- ; Oxalyldimalonic acid ; Tetronic acids ; 1,3-Dioxin-4-ones ; Furo[3,2-b]furans ; Pyrrolo[3,2-b]pyrroles ; Tetracarbonylmethanes ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Derivatives of Oxalyldimalonic AcidStarting with furanone 3 and mesoxalic acid esters, the compounds 8 as monolactones of the title compound have been synthesized. A versatile intermediate is the dioxinone 15, the masked acylketene 16. Regioselective partial saponification of 8a led to the diester 8e which was converted into the dilactone 2. The enamine 8d isomerizes by two pathways. By alkanolate catalysis the γ-alkylidenetetramic acid 24 was obtained and used to prepare the lactam-lactone 25 and the dilactam 27. Thermal isomerization of 8d gave the cyclic tetracarbonylmethane derivative 19. Ring opening reactions of 19 did not furnish derivatives of the title compound but the isomeric acids 20-23. Some open-chain derivatives of oxalylbismalonic acid (12, 26) were obtained from 8c/8d by lactone cleavage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199419941112
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Organische Phosphorverbindungen. XXI. Zum Mechanismus der Arylierung von Phosphorthiochlorid in Gegenwart von Friedel-Crafts AktivatorenProfessor E. Wiberg zum 65. Geburtstage am 3. Juni 1966 gewidmet (1966)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 345 (1966), S. 29-34 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Conductivity measurements and 31P nuclear magnetic resonance studies of the AlCl3 complexes of PSCl3, C6H5PSCl2, (C6H5)2PSCl, and (C6H5)3PS are reported. A mechanism of the arylation of PSCl3 in the presence of FRIEDEL-CRAFTS activators is proposed.
    Notes: Leitfähigkeitsmessungen und 31P kernmagnetische Resonanzuntersuchungen der AlCl3-Komplexe von PSCl3, C6H5PSCl2, (C6H5)2PSCl und (C6H5)3PS werden mitgeteilt und daraus Rückschlüsse auf den Mechanismus der Arylierung von PSCl3 in Gegenwart von FRIEDEL-CRAFTS-Aktivatoren gezogen.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19663450105
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Organic Phosphorus Compounds. 55. The direct synthesis of hydroxymethylphosphonic acid, bis(hydroxymethyl)phosphinic acid, and methyl(hydroxymethyl)phosphinic acid (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 394 (1972), S. 117-124 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organische Phosphorverbindungen. 55. Direktsynthese von Hydroxymethylphosphonsäure, Bis(hydroxymethyl)-phosphinsäure und Methyl (hydroxymethyl)-phosphinsäure.Es wird über die Einwirkung von weißem Phosphor auf Formaldehyd in Wasser/Methanol als Reaktionsmedium in Gegenwart einer Base berichtet. Ein Mechanismus, der die Bildung von HOCH2PO3H2, (HOCH2)2PO2H, und CH3(HOCH2)PO2H erklären kann, wird vorgeschlagen. Chlorierung dieser Säuren mit SOCl2 liefert ClCH2P(O)Cl2 (ClCH2)2P(O)Cl und CH3(ClCH2)P(O)Cl.
    Notes: The interaction of white phosphorus and formaldehyde in water/methanol in the presence of a base is described. A mechanism accounting for the formation of HOCH2PO3H2, (HOCH2)2PO2H and CH3(HOCH2)PO2H is proposed. Chlorination of these products to give ClCH2P(O)Cl2, (ClCH2)2P(O)Cl, and CH3(ClCH2)P(O)Cl is also reported.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723940114
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Organic phosphorus compounds. 54. A new method for the Preparation of 2-Alkoxysubstituted Vinylphosphonates (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 394 (1972), S. 111-116 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organische Phosphorverbindungen. 54. Eine neue Methode zur Herstellung von 2-Alkoxy-substituierten Vinylphosphonaten.Eine neue Methode zur Herstellung von 2-Alkoxyvinylphosphonaten, ROCH=CHP(O)(OC2H5)2 (R = CH3, C2H5, C9H19) und 2-(2-Hydroxyethoxy)-vinylphosphonat, HOCH2CH2OCH=CHP(O)(OC2H5)2, wird beschrieben und einige physikalische Eigenschaften der neuen Verbindungen werden mitgeteilt.
    Notes: A new process for the preparation of 2-alkoxyvinylphosphonates, ROCH = CHP(O)(OEt)2 (R = CH3, C2H5, C9H19) and 2-(2-hydroxyethoxy)vinylphosphonate, HOCH2CH2OCH=CHP(O)(OEt)2, is described and the physical properties of the new products are reported.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723940113
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    Paper (German National Licenses)
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