𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Organic azides in heterocyclic synthesis, 11. Ring closure of 3-acetyl-4-azido-2-quinolones to isoxazolo[4,3-c]quinolones

✍ Scribed by Roschger, Peter ;Stadlbauer, Wolfgang

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
317 KB
Volume
1990
Category
Article
ISSN
0947-3440

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Thermolysis of the 3‐acetyl‐4‐azido‐2‐quinolone 6, which was obtained from the corresponding 4‐tosyloxy derivative 5, afforded the ring closed isoxazoloquinolone 7 in good yield.

📜 SIMILAR VOLUMES

Organic azides in heterocyclic synthesis
Organic azides in heterocyclic synthesis, 12. Thermal cyclization of 4-azido-3-formyl-2-quinolones to isoxazolo[4,3-c]quinolones
✍ Roschger, Peter ;Stadlbauer, Wolfgang 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 350 KB

## Abstract Thermolysis of the 4‐azido‐3‐formyl‐2‐quinolone 6, which was prepared from the 4‐hydroxy‐2‐quinolone 1, afforded the ringclosed isoxazoloquinolone 7. 3‐(Arylaminomethylene)‐2,4‐quinolinediones 2 could not be transformed into an azide precursor in order to obtain the corresponding pyrazo

Ring Closure of 4-Azido-3-formyl-(or Ace
Ring Closure of 4-Azido-3-formyl-(or Acetyl-)2-pyridones to Isoxazolo[4,3-c]pyridones
✍ Khattab, Ahmed F. 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 294 KB

## Abstract Azidation of the chlor aldehyde 2, which was obtained from the 4‐hydroxy‐2‐pyridone 1, afforded the ring‐closed isoxazolopyridone 3. Thermolysis of the 3‐acetyl‐4‐azido‐2‐pyridone 8, which was obtained from the corresponding 4‐tosyloxy derivative 7, afforded isoxazolopyridine 9. Aminati

Thermolytic ring closure reactions of 4-
Thermolytic ring closure reactions of 4-azido-3-phenylsulfanyl-and 4-azido-3-phenylsulfonyl-2-quinolones to 12H-quinolino-[3,4-b][1,4]benzothiazin-6(5H)-ones
✍ 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 **