ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

You have 0 saved results.
Mark results and click the "Add To Watchlist" link in order to add them to this list.
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
  • Wiley-Blackwell  (1)
  • 1980-1984  (1)
Collection
Publisher
  • Wiley-Blackwell  (1)
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 748-753 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Absolute Configuration of Optically Active 4,5-Diazatwist-4-eneThe adduct 5 of diphenyl azodicarboxylate and 7,8-dibromobicyclo[4.2.0]octa-2,4-diene is transformed via 6 and 7 to the twistane derivative 8a, which is partially resolved on cellulose triacetate. Hydrogenation of (-)-4,5-Diazatwist-4-ene ((-)-1), obtained from (-)-8a, yields 2e, isolated as the hydrochloride (+)-2d. Since (+)-2d correlates with (+)-(2S, 5S)-bicyclo[2.2.2]octane-2,5-dicarboxylic acid ((+)-2a), M-helicity is attributed to (-)-1.
    Notes: Das Addukt 5 aus Azodicarbonsäure-diphenylester und 7,8-Dibrombicyclo[4.2.0]octa-2,4-dien liefert über 6 und 7 das Twistanderivat 8a, das sich an Triacetylcellulose partiell in die Enantiomeren trennen läßt. Hydrierung des aus (-)-8a zugänglichen (-)-4,5-Diazatwist-4-ens ((-)-1) ergibt 2e, das als Hydrochlorid (+)-2d isoliert wird. Da (+)-2d mit der (+)-(2S, 5S)-Bicyclo[2.2.2]octan-2,5-dicarbonsäure ((+)-2a) korreliert ist, wird (-)-1 die M-Helizität zugeordnet.
    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...