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Theoretical and experimental studies on ring closure reactions of 4(5)-chloro-5(4)-hydroxyalkylamino-6-nitro-3(2H)-pyridazinones

✍ Scribed by Olivér Éliás; László Károlyházy; Géza Stájer; Ferenc Fülöp; Klára Czakó; Veronika Harmath; Orsolya Barabás; Katalin Keserű; Péter Mátyus


Book ID
114141489
Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
393 KB
Volume
545
Category
Article
ISSN
0166-1280

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Thermolytic ring closure reactions of 4-
✍ Anna E. Täubl; Klaus Langhans; Thomas Kappe; Wolfgang Stadlbauer 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 61 KB

## Abstract 4‐Hydroxy‐3‐phenylsulfanyl‐2‐quinolones 2 and 4‐hydroxy‐3‐sulfonyl‐2‐quinolones **7**, which are readily accessible from 4‐hydroxy‐2‐quinolones 1 and diphenyldisulfide or thiophenol, can be converted to 4‐azido‐3‐phenylsulfanyl‐2‐quinolones 10 or 4‐azido‐3‐phenylsulfonyl‐2‐quinolones **