New N-Heterocyclic Carbene Palladium Complex/Ionic Liquid Matrix Immobilized on Silica: Application as Recoverable Catalyst for the Heck Reaction
Babak Karimi* and Dieter Enders
*Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), P.O. Box 45195-1159, Gava Zang, Zanjan, Iran, Institute for Fundamental Research (IPM), Farmanieh, P.O. Box 19395-5531, Tehran, Iran, Email: karimiiasbs.ac.ir
B. Karimi, D. Enders, Org. Lett., 2006, 8, 1237-1240.
DOI: 10.1021/ol060129z (free Supporting Information)
A covalently anchored N-heterocyclic carbene palladium/ionic liquid matrix on a silica surface gave a highly efficient catalyst for the Heck reaction of various haloarenes. The catalyst shows high thermal stability and could be recovered and reused for four reaction cycles.
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B. Karimi, S. Abedi, J. H. Clark, V. Budarin, Angew. Chem. Int. Ed., 2006, 45, 4776-4779.