The Methyl Enol Ethers of Ethyl 2, 4-Dioxopentanoate

✍ Scribed by Akhtar Haider; Hugo Wyler

• Book ID: 102252824
• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: German
• Weight: 281 KB
• Volume: 66
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19830660220

✦ Synopsis

Abstract

Methylation of ethyl 2, 4‐dioxopentanoate with diazomethane gives a mixture of two enol ethers, the 2‐methoxy and the 4‐methoxy isomer, with a product ratio which depends upon reaction temperature. Both enol ethers, initially (Z)‐configurated, isomerize to the corresponding (E)‐conformers, the 4‐methoxy compound with particular ease.