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Title of article :
The first synthesis of a cyclic carbonate from a ketal in SC-CO2
Author/Authors :
Aresta، نويسنده , , Michele and Dibenedetto، نويسنده , , Angela and Dileo، نويسنده , , Caterina and Tommasi، نويسنده , , Immacolata and Amodio، نويسنده , , Eliana، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
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Abstract :
In this paper the synthesis of a cyclic organic carbonate by a halogen-free route is described. The ketal formed from cyclohexanone and 1,2-ethanediol was reacted with carbon dioxide, either in SC-CO2 or in organic solvents under CO2 pressure. Transition-metal complexes with functionalized fluorinated di-ketone ligands were used as catalyst. The synthetic methodology based on SC-CO2 is effective for the synthesis of ethylene carbonate. The use of methanol as co-solvent in SC-CO2 prevents the formation of the ethylene carbonate and only the alcoholysis of the ketal is observed. In organic solvents, no reaction takes place.
Keywords :
SC-CO2 reagent , SC-CO2 solvent , Cyclic ketal , Cyclic organic carbonates
Journal title :
Journal of Supercritical Fluids
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Link To Document :