Pyranopyrazoles III synthesis of 1H-pyrano[2,3-c]pyrazol-4-ones

✍ Scribed by Misbahul Ain Khan; Gwynn Pennant Ellis; Mario Celso Pagotto

• Publisher: Journal of Heterocyclic Chemistry
• Year: 2001
• Tongue: English
• Weight: 52 KB
• Volume: 38
• Category: Article
• ISSN: 0022-152X
• DOI: 10.1002/jhet.5570380129

✦ Synopsis

Abstract

Various derivatives of title ring system were synthesized by Claisen condensation of 4 acetyl‐5 ‐hydroxy‐pyrazoles with appropriate esters, followed by acid‐catalyzed ring closure.