title: Copper-catalyzed Ficini [2 + 2] cycloaddition of ynamides.
abstract: The Ficini [2 + 2] cycloaddition using N-sulfonyl-substituted ynamides is described, featuring the utility of CuCl(2) and AgSbF(6) as catalysts. This work represents the first successful example of ynamides participating in a thermal [2 + 2] cycloaddition with enones.
authors.affiliation: Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, USA.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Li
authors.forename: Richard P
authors.initials: RP
authors.lastname: Hsung
authors.forename: Kyle A
authors.initials: KA
authors.lastname: DeKorver
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Wei
mesh_terms: D000577:Amides / Q000737:chemistry*; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D003500:Cyclization; D015394:Molecular Structure; D013450:Sulfones / Q000737:chemistry
chemical_list: D000577:Amides; D013450:Sulfones; D003300:Copper