Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 921-930 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The hitherto unknown title compounds 1 and 2 - readily obtained by amine diazotation (1) and Bamford-Stevens reaction (1, 2), respectively - show expected differences in both spectroscopic (UV/VIS, IR) and reactive behaviour towards (a) acids and electrophiles, (b) cycloaddition partners, (c) nucleophiles as well as (d) under thermolytic conditions leading to carbenes. Due to the more pronounced electron-withdrawal of the tetrazolyl system I, the isomers 1 react more slowly than 2 in cases (a) and (b), while with (c) and (d) the order is reverse. - The compounds 1 exhibit a certain sensitivity towards aqueous alkali (loss of the CHN2 function).
    Notes: Die bisher nicht bekannten Titelverbindungen 1 und 2 - gut zugänglich durch Amin-Diazotierung (1) bzw. Bamford-Stevens-Reaktion (1, 2) - zeigen neben planmäßigen Unterschieden im spektroskopischen Verhalten (UV/VIS, IR) erwartete Reaktivitätsabstufungen gegenüber (a) Säuren und Elektrophilen, (b) Cycloaddenden, (c) Nucleophilen sowie (d) bei der thermolytischen Carbenbildung. Dem stärkeren Elektronenzug des Tetrazolylsystems I zufolge reagieren die Isomeren 1 bei (a) und (b) langsamer als 2, bei (c) und (d) hingegen schneller. - Die Verbindungen 1 zeigen eine gewisse Alkaliempfindlichkeit (Verlust der CHN2-Funktion).
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 1575-1578 
    ISSN: 0009-2940
    Keywords: 5-Tetrazolamines, 1-(methylenamino)- ; Dimroth rearrangement ; (5-Tetrazolyl)hydrazones ; Cyanohydrazones, reaction with hydrogen azide ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dimroth Rearrangement of Imines Derived from 1,5-DiaminotetrazoleHeating the imines 1 in dimethyl sulfoxide (or partly in xylene) provides hydrazones such as 2. The reaction is greatly favoured by electron-withdrawing groups attached to the imine carbon atom.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1989 (1989), S. 689-690 
    ISSN: 0170-2041
    Keywords: Methanoditetrazolo-[1,3,6,8]tetrazecine ; Hexamethylenetetramine ; Tetrazole, 5-(chloromethyl)- ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A Methanoditetrazolo-[1,3,6,8]tetrazecine from 5-(Chloro-methyl)tetrazole and HexamethylenetetramineIn contrast to N-substituted 5-(chloromethyl)tetrazoles (1; R=alkyl, aryl), the parent compound 1 (R=H) reacts with hexamethylenetetramine to give the methanoditetrazolo-[1,3,6,8]tetrazecine 4, a rather unusual system. This compound which is also produced on reaction of 7 with formaldehyde occurs in the (6RS,13RS) form.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...