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
  • 1975-1979  (2)
Collection
Keywords
Publisher
Year
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1509-1517 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mechanism of the Reaction of 1,1-Diphenylhydrazine with Diethyl Azodicarboxylate.The reaction of 1,1-diphenylhydrazine (1a) with diethyl azodicarboxylate (2a) is a superposition of five mechanisms: A and B) Oxidation of diphenylhydrazine 1a by diethyl azodicarboxylate (2a) to aminonitrene 8; formation of tetrazene 10 either by dimerisation of 8 or by oxidation of tetrazane 11, decomposition of 11 to N2 and diphenylamine.  -  C) Addition of aminonitrene 8 to azodicarboxylate 2a forming aminoazimine 3a; degradation of 3a to urethane 4a and the azidoformate 5a.  -  D) Isomerisation of aminoazimine 3a to 13 and reduction of 13 by 1a to tetrazene 14, decomposition of 14 to diphenylamine and azide 15; degradation of 15 to ethyl cyanate (17) and monoethyl carbonate 18, which yields CO2 and ethanol.  -  E) Reaction of diphenylhydrazine with diethyl azodicarboxylate to 20 and the diimine derivative 21, which decomposes to N2 an ethyl formate 22.
    Notes: Bei der Umsetzung von 1,1-Diphenylhydrazin (1a) mit Azodicarbonsäure-diethylester (2a) über-lagern sich fünf Reaktionsmechanismen: A und B) Oxidation des Diphenylhydrazins 1a durch den Azodicarbonsäureester 2a zum Aminonitren 8; Bildung des Tetrazens 10 entweder durch Dimerisierung von 8 oder über das Tetrazan 11; Zerfall von 11 in N2 und Diphenylamin.  -  C) Addition des Aminonitrens 8 an den Azodicarbonsäureester 2a zum Aminoazimin 3a; Zerfall von 3a in das Urethan 4a und den Azidoameisensäureester 5a.  -  D) Isomerisierung des Aminoazimins 3a zu 13 und Reduktion von 13 durch 1a zum Tetrazen 14; Spaltung von 14 in Diphenylamin und das Azid 15; Zerfall von 15 in Ethylcyanat (17) und den Kohlensäurehalbester 18, der in CO2 und Ethanol übergeht.  -  E) Umsetzung des Diphenylhydrazins 1a mit Azodicarbonsäureester 2a zu 20 und dem Diimin-Derivat 21, das in N2 und den Ameisensäureester 22 zerfällt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 1975-03-01
    Print ISSN: 0007-4632
    Electronic ISSN: 1432-1394
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Published by Springer
    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...