New reactions of carbon suboxide with alkynes

✍ Scribed by Laura Casu; Leonardo Bonsignore; Filippo Cottiglia; Giuseppe Loy; Elias Maccioni

• Publisher: Journal of Heterocyclic Chemistry
• Year: 2003
• Tongue: English
• Weight: 54 KB
• Volume: 40
• Category: Article
• ISSN: 0022-152X
• DOI: 10.1002/jhet.5570400219

✦ Synopsis

Abstract

Synthesis of 3,4,7,8‐tetraalkyl‐2‐oxa‐bicyclo[4.2.0]octa‐1(6),3,7‐trien‐5‐ones(4a‐d),4,5,7,8‐tetraalkyl‐2‐oxa‐bicyclo[4.2.0]octa‐1(6),4,7‐trien‐3‐ones (6a‐d) and 3,4,7,8‐tetraalkyl‐2__H__,5__H__‐cyclobuta[b]pyrano‐[2,3‐d]pyran‐2,5‐diones (7a‐d) from the reaction of alkynes (la‐d) with carbon suboxide (2) in various molar ratios is described.