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  • 1
    Electronic Resource
    Electronic Resource
    The Modular Approach in Supramolecular Chemistry (1998)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1998 (1998), S. 2689-2702 
    Details
    ISSN: 1434-193X
    Keywords: Modular approach ; Building blocks ; Supramolecular chemistry ; Calix[4]arenes ; Resorcin[4]arenes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: This review describes covalent and non-covalent combinations of building blocks, e.g. calix[4]arenes, resorcin[4]arenes, cyclodextrins, porphyrins, and cyclotriveratrylenes, leading to well-defined large (receptor) molecules.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    A Modular Approach to Potential Synthetic Receptors with Large Surfaces Based on Crown[n]cavitands (1998)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1998 (1998), S. 1597-1607 
    Details
    ISSN: 1434-193X
    Keywords: Cavitands ; Crown compounds ; Calix[4]arenes ; Building blocks ; Modular approach ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Crown[n]cavitands were synthesized by alkylation of tetrahydroxycavitands with polyethyleneglycol ditosylates. The bridging of two hydroxy groups at adjacent aromatic rings by a pentaethyleneglycol unit is favored over the bridging of two hydroxy groups at opposite aromatic rings. The presence of a sodium base enhances the formation of the 1,2-crown[n]cavitand and improves the yield. The combination of 1,2-crown[6]cavitands with calix[4]arenes or resorcin[4]arenes resulted in potential receptor molecules with large hydrophobic surfaces.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 3
    Electronic Resource
    Electronic Resource
    Complexation Properties of Preorganized Receptor Molecules for Large, Neutral Guests (1997)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1997 (1997), S. 1577-1586 
    Details
    ISSN: 0947-3440
    Keywords: Host-guest chemistry ; Calix[4]arenes ; Resorcin[4]arenes ; Dimerization ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Receptor molecules with a preorganized cavity were synthesized by combining two resorcin[4]arene and one calix[4]-arene building block. Based on predictions from a computational study which matches hosts and guests, several steroids, sugar derivatives, and alkaloids were selected for complexation studies. Experimentally the complexation of such guests by these receptor molecules was proven by 1H-NMR spectroscopy (association constants of 1.0-6.0 × 102 M-1 in CDCl3). One of these receptors with four hydroxyl groups forms a dimeric capsule (Kdimer = 11 M-1 in CDCl3). Evidence for this dimerization comes from 1H-NMR, FAB MS spectroscopy, and molecular mechanics and dynamics calculations.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199719970739
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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