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  • Articles: DFG German National Licenses  (2)
  • Cyclization  (1)
  • Organosilyl, Alkoxysulfinyl Phosphine Cobalt Carbonyl Complexes  (1)
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  • Articles: DFG German National Licenses  (2)
Material
Years
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 127 (1996), S. 305-311 
    ISSN: 1434-4475
    Keywords: 2-Amino-4-nitrophenol ; Cyclization ; Dibromoalkane ; Rotamer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine neue Methode zur Herstellung heterozyklischer Derivate von 2-Amino-4-nitrophenol wird vorgestellt. Dieses allgemeine Verfahren kann zur Synthese von verschiedenen Ringsystemen (partielle gesättigte 1,4-Benzoxazine, 1,5-Benzoxazepine, 1,6-Benzoxazocine) benutzt werden. In den Lösungen derN-Formyl-Derivate können zwei Rotamere identifiziert werden. Ihre relative Menge hängt vom Lösungsmittel ab.
    Notes: Summary A new pathway for the synthesis of cyclic derivatives of 2-amino-4-nitrophenol by application of dibromoalkanes is described. This general method was used for the preparation of several heterocycles (partially saturated 1,4-benzoxazines, 1,5-benzoxazepines, 1,6-benzoxazocines). Two rotamers are present in solution of theN-formyl derivatives, the relative amounts depending on the solvent used.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Phosphine Cobalt Carbonyl Complexes ; Alkyl, Alkoxy Cobalt Carbonyls ; Sulfur Dioxide ; Organosilyl, Alkoxysulfinyl Phosphine Cobalt Carbonyl Complexes ; Synthesis ; IR, 1H NMR Spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sulfur Dioxide as Ligand and Synthon. IX. Reactions of Cobalt Carbonyls with Sulfur Dioxide - Synthesis and Characterization of Alkoxysulfinyl-Cobalt Carbonyl ComplexesReactions of phosphine substituted Co2(CO)8, (Ph2P-(CH2)n-PPh2: n = 1, dppm; n = 2, dppe; n = 3, dppp; n = 4, dppb), alkylcobalt carbonyls and alkoxycobalt carbonyls with sulfur dioxide have been investigated. The SO2 containing cobalt complexes are characterized by means of I.R., 1H-NMR, and mass spectra. Further on synthesis and properties of new alkoxysulfinylphosphine-cobalttricarbonyl complexes of the type ROS(O)Co(CO)3PR31 (R = Ph3Si, Me; R1 = Et, i-Pr, Ph) are described.
    Notes: Reaktionen von phosphinsubstituiertem Co2(CO)8, (Ph2P-(CH2)n-PPh2: n = 1, dppm; n = 2, dppe; n = 3, dppp; n = 4, dppb), Alkylcobaltcarbonylen sowie Alkoxycarbonyl-Cobaltcarbonylen mit Schwefeldioxid wurden untersucht. Die Charakterisierung der gebildeten SO2 enthaltenden Cobaltkomplexe erfolgte mit Hilfe der IR-, 1H-NMR- und Massenspektroskopie. Darüber hinaus werden Synthese und Eigenschaften neuer Alkoxysulfinyl-Phosphin-Cobalttricarbonyl-Komplexe des Typs ROS(O)Co(CO)3PR31 (R = Ph3Si, Me; R1 = Et, i-Pr, Ph) beschrieben.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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