Ionic liquids as powerful media in lanthanides triflate catalysed Diels-Alder reactions between cyclopentadiene and dimethyl maleate

• Autorzy: Dramska A. , Janus E.
• Języki publikacji: EN

Abstrakty

EN

1-Butyl-3-methylimidazolium trifluoromethanesulfonate has been tested as a reaction medium in the Diels-Alder reaction between cyclopentadiene and dimethyl maleate. The effect of three Lewis acids - scandium triflate Sc(OTf)3, yttrium triflate Y(OTf)3 and ytterbium triflate Yb(OTf)3 on the yield and the endo/exo product ratio has been investigated. All the catalysts immobilized in [BMIM][OTf] were recycled without a significant decrease in the yields and the endo/exo ratio.

Słowa kluczowe

EN

ionic liquids; 1-butyl-3-methylimidazolium trifluoromethanesulfonate; Diels-Alder reaction; lanthanides

PL

ciecze jonowe; reakcja Dielsa-Aldera; lantanowce

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 2
• Strony: 9--11
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Dramska A.

autor

Janus E.

• Technical University of Szczecin, Department of Organic Chemical Technology, ul Pułaskiego 10, 70-322 Szczecin

Bibliografia

• (1) Carruthers W.: Cycloaddition Reactions in Organic Synthesis, Pergamon, Oxford, 1990 and references therein.
• (2) Fringuelli F., Tatichi A.: Dienes in the Diels-Alder Reactions, Wiley, New York, 1990.
• (3) www.ionicliquids-merck.de, 2005.
• (4) Ionic Liquids, ChemFiles, 2006, 5 (6).
• (5) Pernak J.: Przemysł Chemiczny, 2000, 79 (5), 150.
• (6) Pernak J.: Przemysł Chemiczny, 2003, 82 (8 - 9), 521.
• (7) Holbrey J. D., Seddon K. R.: Clean Products and Processes, 1999, 223.
• (8) Jain N., Kumar A., Chauchan S., Chauchan S. M.: Tetrahedron, 2005, 61, 1015.
• (9) Wasserscheid P., Keim W: Angew. Chem. Int. Ed., 2000, 39, 3772.
• (10) Welton T., Coord. Chem. Rev. 2004, 248, 2459.
• (11) Song Ch. E., Shim W. H., Coi J. H.: Chem. Comm., 2000, 1695.
• (12) Olivier H.: J. Mol. Catal. A: Chem., 1999, 145, 285.
• (13) Yadav J. S., Reddy B. V., Gayathri K. U., Prasad A. R.: Synthesis Commun., 2002, 17, 2537.
• (14) Dramska A., Antoszczyszyn M., Janus E.: Przem. Chem., 2006, 85(1), 47