Lanthanide triflate-promoted palladium-catalyzed cyclization of alkenyl beta-keto esters and amides |
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Authors: | Yang Dan Li Jin-Heng Gao Qiang Yan Yi-Long |
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Affiliation: | Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China. yangdan@hku.hk |
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Abstract: | [reaction: see text] Lanthanide triflates were found to promote the palladium-catalyzed cyclization of alkenyl beta-keto esters and amides. In the presence of catalytic amounts of PdCl(2)(MeCN)(2) and Ln(OTf)(3), various alkenyl beta-keto esters and amides underwent regioselective cyclization reactions to give six-, seven-, or eight-membered-ring carbocycles in moderate to excellent yields. |
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