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Dramatic Enhancement of Catalytic Activity in an Ionic Liquid: Highly Practical Friedel-Crafts Alkenylation of Arenes with Alkynes Catalyzed by Metal Triflates

Choong Eui Song*, Da-un Jung, Su Yhen Choung, Eun Joo Roh and Sang-gi Lee

*Institute of Basic Science, Department of Chemistry, Sungkyunkwan University, 300 Chunchun, Jangan, Suwon, Kyunggi, 440-746, Korea, Email:

C. E. Song, D.-U. Jung, S. Y. Choung, E. J. Roh, S.-G. Lee, Angew. Chem. Int. Ed., 2004, 43, 6183-6185.

DOI: 10.1002/anie.200460292

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The employment of hydrophobic ionic liquids dramatically enhanced the activity of metal triflates in Friedel-Crafts alkenylations of aromatic compounds with various alkyl- and aryl-substituted alkynes.

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Key Words

alkenylation, Friedel-Crafts Reaction, C-C bond formation, homogeneous catalysis, ionic liquids, Lewis acids, coumarins, 2-quinolones

ID: J06-Y2004-880