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Synthesis of Tricyclic Quinolones and Naphthyridones by Intramolecular Heck Cyclization of Functionalized Electron-Rich Heterocycles

✍ Scribed by Egle M. Beccalli; Gianluigi Broggini; Michela Martinelli; Giuseppe Paladino; Caterina Zoni

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
107 KB
Volume
2005
Category
Article
ISSN
1434-193X

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✦ Synopsis

Abstract

Starting from commercially available pyrrole‐ and thiophene‐2‐carboxylic acids 1 or thiophene‐ and furan‐3‐carboxylic acids 6, we report the synthesis of tricyclic fused quinolone and naphthyridone derivatives, in only three steps, by an intramolecular Heck cyclization. We also report the use of microwave irradiation to obtain, in some cases, better yields of cyclized products. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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