Citation: Hong Ping LI, Hai Fei ZHANG, Jun LIU, Bu Xing HAN. Cosolvent Effect on the Tautomerism of Ethyl Acetoacetate in Supercritical CO₂[J]. Chinese Chemical Letters, ;2001, 12(4): 351-352. shu

Cosolvent Effect on the Tautomerism of Ethyl Acetoacetate in Supercritical CO₂

Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080

Received Date: 7 September 2000

Fund Project: This work was financially support by National Basic Research Project (G2000048010).

The effect of cosolvent cyclohexane, chloroform, and acetonitrile on the keto-enol tautomeric equilibrium of ethyl acetoacetate in supercritical CO₂ was studied by UV-Vis spectroscopy over the pressure range from 76 to 110 bar at 308.15 K. It was found that the equilibrium constant decreases with increasing polarity of the cosolvents.
- Supercritical CO₂,
- cosolvent effect,
- ethyl acetoacetate,
- tautomerism.
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