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  • Organic Chemistry  (3)
  • Tetrathiafulvalenes  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Synthesis and Characterisation of Macrobicyclic Tetrathiafulvalene-Bridged Cage Molecules (1998)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1998 (1998), S. 1743-1757 
    Details
    ISSN: 1434-193X
    Keywords: Cyclophanes ; Electrochemistry ; Tetrathiafulvalenes ; Macrocycles ; Crystal structure ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of new macrobicyclic tetrathiafulvalenophanes of type 1 and 2 with three tetrathiafulvalene bridges has been prepared under high-dilution conditions using a stepwise selective protection-deprotection of tetrathiafulvalenethiolates. All the macrobicyclic tetrathiafulvalenes, along with the intermediate compounds 5 and 6 and the unexpected tetrathiafulvalene pentamers 17, were studied by cyclic voltammetry. An electrochemical investigation using the Bard-Anson equation and thin-layer cyclic voltammetry has been carried out, allowing an estimate of the number of electrons involved in each redox process of these multi-redox compounds. The X-ray crystal structure showing the unusual crystal packing of 2a is also presented.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Bis(pyrrolo)tetrathiafulvalene - An Efficient π-Donor in Supramolecular Chemistry (1999)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1999 (1999), S. 3335-3341 
    Details
    ISSN: 1434-193X
    Keywords: Catenanes ; Donor-acceptor interactions ; Self-assembly ; Supramolecular chemistry ; Tetrathiafulvalenes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis of three novel macrocycles 3-5based on the two electron donors bis(2,5-dimethylpyrrolo)[3,4-d]tetrathiafulvalene (1) and 1,4-hydroquinone is presented. Their abilities to include the electron acceptor paraquat (6) have been investigated by UV/Vis and 1H NMR spectroscopy and an X-ray crystallographic analysis. Also, the complex formation between the cyclic acceptor cyclobis(paraquat-p-phenylene) (7) and different tetrathiafulvalene derivatives has been studied. A strong association between 1 and 7 facilitates the self-assembly of catenanes from the macrocycles 3-5. However, the preferred position of the cyclic acceptor 7in the catenanes around either the pyrrolo-annelated TTF or around the hydroquinone donor relies on a fine balance between all the individual noncovalent forces acting in cooperation.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Two- and Three-Dimensional Tetrathiafulvalene Macrocycles (1997)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1997 (1997), S. 2177-2187 
    Details
    ISSN: 0947-3440
    Keywords: Tetrathiafulvalene ; Cyclophanes ; Macrocycles ; Donor-acceptor systems ; Supramolecular chemistry ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The syntheses and some physical properties (redox potentials) of cyclic tetrathiafulvalenes (TTF) are reviewed. The ring closure is generally performed in one of two different ways: (i) by coupling of 1,3-dithiol derivatives thereby forming the central fulvene bond, or (ii) by cyclization of a preformed TTF derivative. The second route is very efficient when using the cyanoethyl protection/deprotection method and has made possible the preparation of a number of two- and three-dimensional macrocycles, e.g. mono-, bis- and tetramacrocycles, oligomeric macrocycles and cage-type molecules. The use of tetrathiafulvalenophanes in supramolecular chemistry is also exemplified in this microreview.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199719971103
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  • 4
    Electronic Resource
    Electronic Resource
    Pyridinethiones, X Preparation of Pentene-1,5-dione Enolates and of 3-Benzoyl-2(1H)-Pyridinethiones (1985)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1985 (1985), S. 620-627 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Pyridinthione, X. - Synthese von Penten-1,5-dion-Enolaten und 3-Benzoyl-2(1H)-pyridinthionenEs wird ein ergiebiges Verfahren zur Herstellung von 3-Benzoyl-2(1 H)-pyridinthionen 5a - n aus stabilen Enol-Salzen 4 von Penten-1,5-dionen beschrieben. Ein Versuch zur Darstellung von 3-Aryl-2(1 H)-pyridinthion aus der Cyanverbindung 7 mit CH3MgX lieferte das Ketimin 8.
    Notes: An effective synthesis of 3-benzoyl-2(1 H)-pyridinethiones 5a - n from stable enol salts 4 of pentene-1,5-diones and isothiocyanates is described. An attempt to prepare a 3-acetyl-2(1 H)-pyridinethione from the cyano compound 7 and CH3MgX yielded the ketimine 8.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198519850323
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  • 5
    Electronic Resource
    Electronic Resource
    Pyridinethiones, XII. Synthesis of 2,3-dihydro-6-methylthio-4(1H)-pyridones and 2,3-dihydro-4H-thiopyran-4-ones (1986)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1986 (1986), S. 1109-1118 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Pyridinthione, XII. - Synthese von 2,3-Dihydro-6-methylthio-4(1H)-pyridonen und 2,3-Dihydro-4H-thiopyran-4-onenAnionen von zahlreichen Zimtsäure-Esterkondensationsprodukten 1 (R2 = COCH3, CO2R und CN) reagieren mit Arylisothiocyanaten zu 6-Arylamino-2,3-dihydro-4H-thiopyran-4-onen 5. Die anionischen Zwischenstufen 4 lassen sich zu 2,3-Dihydro-6-methylthio-4(1H)-pyridonen 6 methylieren.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198619860615
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