ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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 116 (1983), S. 3332-3337 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydratisierte Oxokohlenwasserstoffe, II. Darstellung einer neuen Klasse von thermochromen Bor-Heterocyclen aus Octahydroxycyclobutan oder DihydroxybutendisäureDie Reaktion von Octahydroxycyclobutan (2) mit aktiviertem Triethylboran ergibt in geringer Ausbeute unter Ringaufspaltung von 2 das thermochrome 2,6-Diethyl-1,3,5,7-tetraoxa-2,6-dibora-4,8-octalindion (5b). 5b sowie andere Derivate dieser neuen Verbindungsklasse lassen sich aber in hohen Ausbeuten direkt aus Dihydroxyfumarsäure (6) mit verschiedenen Alkyl- oder Arylboranen herstellen. Mit Ausnahme der tert-Butyl- (5f) und der Aryl-Derivate 51, m verändern sämtliche Verbindungen 5, abhängig vom Substituenten, zwischen -5 und 150°C im Festkörper ihre Farbe reversibel von gelb nach farblos.
    Notes: The reaction of octahydroxycyclobutane (2) with activated triethylborane gives a low yield of the thermochromic 2,6-diethyl-1,3,5,7-tetraoxa-2,6-dibora-4,8-octalindione (5b) by ring cleavage of 2. Additional examples of this novel class of compounds have also been prepared directly by reacting dihydroxyfumaric acid (6) with various alkyl- or arylboranes. With the exception of the tert-butyl- (5f) and the aryl derivatives 51, m, the new compounds 5 undergo a temperature dependent colour change (yellow/colourless) in the solid state. The thermochromic transition temperature Tth depends on the substituents and lies between -5 and 150°C.
    Additional Material: 1 Tab.
    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...