Preparation of α-fluoro-β-per(poly)fluoroalkyl-substituted enol ethers

Autor: Donald J. Burton, Alagappan Thenappan
Rok vydání: 1996
Předmět:
Zdroj: Journal of Fluorine Chemistry. 77:45-50
ISSN: 0022-1139
DOI: 10.1016/0022-1139(95)03382-3
Popis: Fluorocarboethoxymethylene tri-n-butylphosphorane, Bu3P=CFCOOEt (3), reacts with per- and poly-fluoroalkyl-substituted carboxylic acid esters, ethyl formate and γ-butyrolactone to give the corresponding enol ethers, RFC (OEt)=CFCOOEt (4), in good yield. Non-activated esters failed to react with 3. With the anion derived from ethyl diethylphosphonofluoroacetate, (EtO)2P(O)CFHCOOEt (5), a mixture of 4 and β-ketoesters, RFC(O)CFHCOOEt (7), is formed.
Databáze: OpenAIRE