𝔖 Bobbio Scriptorium
✦   LIBER   ✦

13C-NMR.-Spektren von 3H-Benz[cd]azulen-3-onen

✍ Scribed by Richard Neidlein; Walter Kramer; Dieter Schcutzow


Publisher
John Wiley and Sons
Year
1982
Tongue
German
Weight
671 KB
Volume
65
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis


^13^C‐NMR. Spectra of 3__H__‐benz[cd]azulenc‐3‐ones

^13^C‐NMR. Spectra of 7,9‐dimethyl‐3__H__‐benz[cd]azulenc‐3‐one (2) and 7,9‐dimethyl‐4,5‐dihydro‐3__H__‐benz[cd]azulene‐3‐one (7) in CDCl^3^ and CF~3~CO~2~D are reported. The assignment of signals was achieved with the aid of selective proton decoupling, non‐decoupled spectra and comparison with spectra of simple azulene‐derivatives. The major localization of positive charge in the cationic 3‐hydroxybenz‐[cd]azulenium system was found in the six‐ and seven‐membered ring, which suggests in accordance with calculated π‐electron densities the structure of a benztropylium ion rather than a bridged azulenium ion.


📜 SIMILAR VOLUMES


Zur Darstellung von Azulenopseudophenale
✍ Richard Neidlein; Walter Kramer; Ralf Krotz 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 766 KB

Darstellung und spektroskopische Eigenschaften der Verbindungen 2, 3, des nichtsubstituierten Azulenopseudophenalenons 4 sowie der Azulenderivate 5,6,7 und 8 werden beschrieben; ausgehend von dem 4-Azulenyl-dimethylthioether 5 wurden die weiteren Azulenderivate 9, 10, 11 erhalten. Reaktionen an der

Heterocyclische und carbocyclische 12-π-
✍ Richard Neidlein; Walter Kramer 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 German ⚖ 387 KB

**Heterocyclic and Carbocyclic 12‐π‐and 14‐π‐Systems, 47th Commnunication^1^. Synthesis of 7,9‐Dimethyl‐4,5‐dihydro‐3__H__‐benz[__cd__]azualene‐3‐one and 7,9‐Dimethyl‐3__H__‐benz[__cd__]azulene‐3‐one. A Simple Synthesis of Azulenopseudophenalenons** 4, 6, 8‐Trimethylazulene (**3**) reacts after met