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A new thermal study of the reaction of 6-azidopyridones with different amines and hydrazines

✍ Scribed by Ramadan Ahmed Mekheimer; Afaf Mohamed Abd El-Hameid; Kamal U. Sadek

Publisher
Journal of Heterocyclic Chemistry
Year
2008
Tongue
English
Weight
328 KB
Volume
45
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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Reacting of 6‐azidopyridone derivatives 1 with o‐phenylenediamine (2a) in chloroform at room temperature afforded the new azidopyridones 3. However, its fusion with 2a,b at 100–110°C gave the interesting pyrido[2,3‐b][1,5]diazepines 4a,b. Alternatively, compound 4a could also be obtained by heating azidopyridones 3 at 100–110°C. When compound 1 was allowed to react with hydrazines 7a‐d at room temperature it gave the corresponding azido compounds 8a‐d. Fusion of 1 with phenylhydrazine (7d) at 140–160°C afforded the new aminopyridones 10. The 6‐azidopyridones 1 could also be converted to the corresponding 6‐alkylaminopyridones 15a‐d by reaction with an excess of alkylamines at room temperature.

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