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ChemInform Abstract: Pyridonecarboxylic Acids as Antibacterial Agents. Part 20. One-Step Furan Ring Formation: Synthesis of Furo[3,2-h]quinolones.

✍ Scribed by M. FUJITA; H. EGAWA; K. CHIBA; J. MATSUMOTO


Publisher
John Wiley and Sons
Year
2010
Weight
36 KB
Volume
29
Category
Article
ISSN
0931-7597

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One-step furan ring formation: Synthesis
✍ Masahiro Fujita; Hiroshi Egawa; Katsumi Chiba; Jun-Ichi Matsumoto 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 363 KB

## Abstract The one‐pot reaction of ethyl 1‐cyclopropyl‐6,7,8‐trifluoro‐1,4‐dihydro‐4‐oxoquinoline‐3‐carboxylate (6) with __tert__‐butyl acetoacetate gave 3‐__tert__‐butyl 7‐ethyl 9‐cyclopropyl‐4‐fluoro‐6,9‐dihydro‐2‐methyl‐6‐oxofuro[3,2‐__h__]quinoline‐3,7‐dicarboxylate (5). This regioselective cy