ChemInform Abstract: Organic Azides in Heterocyclic Synthesis. Part 21. Thermolysis of 3- Azidophenalen-1-ones to Naphtho(8,1-ab)carbazolones and Naphtho(8,1-ab) -8a-azonia-9-λ2-azafluoren-7-ones.

Thermolysis of 3-azidophenalen-1-ones to

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

✍ Michaela Fischer; Wolfgang Stadlbauer 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 346 KB

## 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 cond