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Electrophilic substitution in the azafluorenone systems — bromination of azafluorenones

✍ Scribed by Doz. Jacek Młochowski; Dr. Zdzisław Szulc

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 396 KB
Volume: 322
Category: Article
ISSN: 1615-4150
DOI: 10.1002/prac.19803220614

No coin nor oath required. For personal study only.

✦ Synopsis

Elektrophile Substitution in Azafluorenonsystemen ‐ Bromierung von Azafluorenonen

Die Bromierung von 1‐ und 4‐Aza‐ und 1,5‐, 1,8‐ und 4,5‐Diazafluorenonen 1–5 mit N‐Bromsuccinimid, Brom in Schwefelsäure oder mit Brom 60proz. Oleum wurde als Modellreaktion für die elektrophile Substitution in Azafluorenon‐Systemen untersucht. Die Bromierung von Monoazafluorenonen mit N‐Bromsuccinimid in Schwefelsäure und Diazafluorenonen mit Brom in 60proz. Oleum ist eine günstige Methode zur Darstellung von bisher unbekannten Bromazafluorenonen. Die Strukturen der erhaltenen Bromderivate wurden mit Hilfe der ^1^H‐NMR‐Spektroskopie festgestellt. Die Ergebnisse der Substitution wurden in Abhängigkeit von der elektronischen Struktur der Azafluorenon‐Systeme diskutiert.

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