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: Um die Tendenz zum bevorzugten anti- oder syn-Angriff in bicyclischen Cyclobutenen zu untersuchen, wurde eine Reihe heterocyclischer Bicyclo[2.2.0]hexene, 3-8, mit 1,3-Dipolen, insbesondere Diazoalkanen, umgesetzt. Alle dipolaren Cycloadditionen führen ausschließlich zu anti-konfigurierten Produkten mit unterschiedlicher Regiochemie in den Fällen 4-8. Ebenso werden bei Pd-katalysierten Methylentransfer-Reaktionen nur anti-Produkte erhalten. Diese Ergebnisse stehen in bemerkenswertem Gegensatz zu den bekannten Cycloadditionen von beispielsweise Dichlorcyclobuten (1) oder dem Carbonat 24.
    Notes: In order to examine the possible preference for anti or syn attack in bicyclic cyclobutenes, a series of heterocyclic bicyclo[2.2.0]hexenes, 3-8, has been subjected to the reaction towards 1,3-dipoles, particularly diazoalkanes. All dipolar cycloadditions exclusively lead to anti-configurated tricyclic products with varying regiochemistry in the cases of 4-8. Similarly, the Pd-catalyzed methylene transfer reactions only yield anti products. These results are in remarkable contrast to the known cycloaddition of, e.g., dichlorocyclobutene (1) or the carbonate 24.
    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...