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Thermolysis of 3-azidophenalen-1-ones to naphtho[8,1-ab]carbazolones and naphtho[8,1-ab]-8a-azonia-9-λ2-azafluoren-7-ones

✍ Scribed by Michaela Fischer; Wolfgang Stadlbauer

Publisher
Journal of Heterocyclic Chemistry
Year
1997
Tongue
English
Weight
346 KB
Volume
34
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

3‐Azido‐1‐phenalenones 4 with aryl‐ or hetarylsubstituents in position 2 cyclized by thermolysis to give naphtho[8,1‐ab]carbazolones 5 or naphtho[8,1‐ab]‐8a‐azonia‐9‐λ^2^‐azafluorenones 7. Reduction of the azides 4 gave the corresponding amino derivatives 9. The thermolysis conditions were studied by differential scanning calorimetry.

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