Carbon-13 nuclear magnetic resonance of some derivatives of 3-methyl-4,1-benzoxazepine-2,5-dione

  • N. Khan
  • M. S. Ansari
  • W. Robien
Organische Chemie Und Biochemie

Summary

13C chemical shift assignment of seven N-derivatives of 3-methyl-4,1-benzoxazepine-2,5-dione is reported. The assignment has been done with the help of J-modulated spectra and by comparison with the values of resembling segments reported in the reference. It has been found that the substituent on nitrogen atom has no significant effect on the13C chemical shift of the skeleton.

Keywords

Benzoxazepinedione Seven membered heterocycles 13C NMR analysis 

13C-NMR einiger Derivative des 3-Methyl-4,1-benzoxazepin-2,5-dions

Zusammenfassung

Es werden die13C-NMR-Verschiebungszuordnungen von sieben N-Derivaten von 3-Methyl-4,1-benzoxazepin-2,5-dionen diskutiert. Die Zuordnungen erfolgten über J-modulierte Spektren und Vergleich von entsprechenden Literaturdaten ähnlicher Molekülsegmente. Es zeigte sich, daß die Substitution am Stickstoff keinen signifikanten Einfluß auf die13C-chemischen Verschiebungen der Skelettkohlenstoffatome hat.

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • N. Khan
    • 1
  • M. S. Ansari
    • 1
  • W. Robien
    • 2
  1. 1.Department of ChemistryQuaid-i-Azam UniversityIslamabadPakistan
  2. 2.Institut für Organische ChemieUniversität WienWienAustria

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