Efficient α-Methylenation of Carbonyl Compounds in Ionic Liquids at Room Temperature
Juliana A. Vale, Daniel F. Zanchetta, Paulo J. S. Moran, J. Augusto R. Rodrigues*
*Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13084-971 Campinas, SP, Brazil, Email: jaugustoiqm.unicamp.br
J. A. Vale, D. F. Zanchetta, P. J. S. Moran, J. A. R. Rodrigues, Synlett, 2009, 75-78.
The application of the 1-butyl-3-methylimidazolium-based ionic liquid [BMIM][NTf2] as solvent enabled clean α-methylenations of carbonyl compounds in a short time and good yields. This ionic liquid was reused without affecting the reaction rates or yields over seven runs.
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ionic liquids, methylenation, enones, carbonyl compounds, organocatalysis