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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 3483-3494 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Aminyl Oxides, XVI. Preparation of Acylaminyl Oxides and their Conformational BehaviourThe hydroxamic acids 5, obtained along with the O-acylhydroxylamines 6 upon acylation of N-tert-butylhydroxylamine, are oxidized to the open-chain acylaminyl oxides 1. The cyclic acylaminyl oxides 2 and 3 are prepared for purposes of comparison. The conformation of the radicals 1 and of some of the precursors 5 is studied by e.s.r. and i.r. spectroscopy using the corresponding cyclic compounds for comparison. The energy barrier for ring inversion in 3 is determined from temperature-dependent line broadening in the e.s.r. spectrum.
    Notes: Die bei der Acylierung von N-tert-Butylhydroxylamin neben den O-Acylhydroxylaminen 6 entstehenden Hydroxamsäuren 5 werden zu den offenkettigen Acyl-aminyloxiden 1 oxidiert. Zum Vergleich werden die cyclischen Acyl-aminyloxide 2 und 3 hergestellt. Die Konformation einiger Hydroxamsäuren 5 und der Radikale 1 wird unter Vergleich mit den entsprechenden cyclischen Verbindungen mittels IR- bzw. ESR-Messungen untersucht. Die Energiebarriere für die Ringinversion von 3 wird aus der Temperaturabhängigkeit der Linienverbreiterung des ESR-Spektrums bestimmt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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