title: Synthesis of fused oxabicyclic systems by metal-catalyzed intramolecular addition of 1,3-cycloalkyldiones to alkynes.
abstract: [reaction: see text] Readily available 4-propargyl-1,3-cyclohexanediones and cyclopentanediones can be chemo- and regioselectively cycloisomerized to synthetically appealing fused oxabicyclic systems by simply stirring at room temperature with catalytic amounts of an appropriate metal complex.
authors.affiliation: Departamento de Química Orgánica y Unidad Asociada al CSIC, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
authors.forename: Moisés
authors.initials: M
authors.lastname: Gulías
authors.forename: J Ramón
authors.initials: JR
authors.lastname: Rodríguez
authors.forename: Luis
authors.initials: L
authors.lastname: Castedo
authors.forename: José L
authors.initials: JL
authors.lastname: Mascareñas