ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
Filter
Collection
Publisher
Years
  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1,2,4-Oxadiazoles containing a C-5-heteroatom Bond, II Synthesis of 5,6-Dihydro-4H-1,2,4-Oxadiazines by ring Extention of Δ2-1,2,4-oxadiazolin-5-onesN-(2-Hydroxyalkyl)-, and N-(3-chloro-2-hydroxypropyl)-Δ2-1,2,4-oxadiazolin-5-one derivatives (6, 8), prepared by reaction of Δ2-1,2,4-oxadiazolin-5-ones (4) with alkylene oxides or epichlorohydrine, respectively, are used as starting materials for the synthesis of 5,6-dihydro-4H-1,2,4-oxadiazines (2) as well as for that of N-monosubstituted amidoximes (7, 11). The reactivity of 2 with methyl iodide and acylating agents is reported.
    Notes: Die durch Reaktion der Δ2-1,2,4-Oxadiazolin-5-one 4 mit Epoxiden bzw. Epichlorhydrin hergestellten N-(2-Hydroxyalkyl)- bzw. N-(3-Chlor-2-hydroxypropyl)-Derivate 6, 8 werden bei der Synthese von 5,6-Dihydro-4H-1,2,4-oxadiazinen (2) bzw. der N-monosubstituierten Amidoxime 7, 11 als Ausgangsmaterialien eingesetzt. Die Reaktionsfähigkeit von 2 gegenüber Methyljodid und Acylierungsmitteln wird beschrieben.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 2999-3003 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Ring Fissions of 4H-1,2,4-Oxadiazin-6(5H)-onesSynthesis of 4H-1,2,4-oxadiazin-6(5H)-ones 4, comprising a new type of this class of compounds, has been carried out from 4-(ethoxycarbonylmethyl)-Δ2-1,2,4-oxadiazolin-5-ones 2 by alkaline hydrolysis and subsequent cyclisation of the amidoxime derivatives 3. The lactone ring of compound 4 is easily opened by hydrolysis and aminolysis, leading to the corresponding amide oxime derivatives 3 and 5. The reactions of 4 with nitrous acid gave the N-acylglycine derivatives 6.
    Notes: Die 4H-1,2,4-Oxadiazin-6(5H)-one 4, ein neuer Typ dieser Verbindungsklasse, wurden aus den 4-(Ethoxycarbonylmethyl)-Δ2-1,2,4-oxadiazolin-5-onen 2 durch alkalische Hydrolyse und nachfolgende Cyclisierung der Amidoxim-Derivate 3 dargestellt. Der Lacton-Ring der Verbindungen 4 wird durch Hydrolyse und Aminolyse leicht gespalten, wobei die entsprechenden Amidoxim-Derivate 3 und 5 entstehen. Die Reaktionen von 4 mit Salpetriger Säure führen zur Bildung der N-Acylglycine 6.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...