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The synthesis and properties of azuleno[1,2-d]bicyclo[5.4.1]dodeca-1,4,6,8,9a-pentaen-3-one and its cationic species

✍ Scribed by Shigeyasu Kuroda; Sunao Maeda; Syuzi Hirooka; Masahiro Ogisu; Kazuo Yamazaki; Ichiro Shimao; Masafumi Yasunami

Publisher
Elsevier Science
Year
1989
Tongue
French
Weight
252 KB
Volume
30
Category
Article
ISSN
0040-4039

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✦ Synopsis

The titled azuleno-annulenone was synthesized and in strong acid its protonated cationic species was generated, which is the first 18-pi electron diatropic condensed bridged annulene as shown in its 'H-NMR spectrum.

Although the syntheses and properties of the condensed 18-pi electron systems such as azulenoazulenes have been reported," no condensed system such as azulene fused with bridged annulenone has so far been investigated. In this paper we wish to report the synthesis and properties of titled azuleno-bridged annulenone and its cationic species generated in strong acid.

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