title: Lanthanide triflate-promoted palladium-catalyzed cyclization of alkenyl beta-keto esters and amides.
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.
authors.affiliation: Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China. yangdan@hku.hk
authors.forename: Dan
authors.initials: D
authors.lastname: Yang
authors.forename: Jin-Heng
authors.initials: JH
authors.lastname: Li
authors.forename: Qiang
authors.initials: Q
authors.lastname: Gao
authors.forename: Yi-Long
authors.initials: YL
authors.lastname: Yan