摘要
The enol contents and equilibrium constants of the ketcrenol tautomerism of ethyl acetoaretate were determined in various solvents using UV spectroscopy. It was found that in supercritical CO2 the enol content decreases dramatically in the presence of 0.047mol.L-1 ethanol.In liquid cyclohexane, however, the effect of the same amount of ethanol on enol content is not detectable. The strong cosolvent effect in SC CO2 results from the clustering of the cosolvent around the solute.
The enol contents and equilibrium constants of the ketcrenol tautomerism of ethyl acetoaretate were determined in various solvents using UV spectroscopy. It was found that in supercritical CO2 the enol content decreases dramatically in the presence of 0.047mol.L-1 ethanol.In liquid cyclohexane, however, the effect of the same amount of ethanol on enol content is not detectable. The strong cosolvent effect in SC CO2 results from the clustering of the cosolvent around the solute.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1997年第4期351-353,共3页
Acta Physico-Chimica Sinica
关键词
乙酰乙酸乙酯
异构化
二氧化碳
超临界流体
Supercritical CO_2
Ethyl acetoaretate, Tautomerism, Cosolvent, Cluster
