Journal
COMPTES RENDUS CHIMIE
Volume 12, Issue 8, Pages 916-921Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2008.09.023
Keywords
Friedel-Crafts; Allylation; Lewis acid; Zinc bis(trifluoromethylsulfonyl)amide; Metal trifluoromethanesulfonates; Catalysis; Prenyl acetate
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The activity of various metallic triflates and triflimidates in the Friedel-Crafts allylation of activated aromatic rings was examined. Zinc bis(trifluoromethylsulfonyl)amide was proved to be a good catalyst in the model reaction with anisole and prenyl acetate. The Friedel-Crafts allylation reaction of various aryl derivatives with allyl acetates was efficiently catalysed under mild conditions, using 3 mol% of Zn(NTf2)(2) as the catalyst, without solvent, at 100 degrees C. The desired ortho and para mono-allylated products were selectively obtained in good yields. The para isomer was always favoured. To cite this article: J. Ricci et al., C. R. Chimie 12 (2009). (C) 2008 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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