title: Ligand-induced acceleration of the intramolecular [3 + 2] cycloaddition between alkynes and alkylidenecyclopropanes.
abstract: [chemical reaction: see text]. Bulky phosphite L6 and several sterically robust phosphoramidites are excellent ligands for promoting the Pd-catalyzed [3 + 2] intramolecular cycloaddition between alkylidenecyclopropanes and alkynes. The use of these ligands allows for low catalyst loadings and facilitates the otherwise sluggish cycloaddition of hept-6-ynylidenecyclopropane systems.
authors.affiliation: Departamento de Química Orgánica y Unidad Asociada al CSIC, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Durán
authors.forename: Moisés
authors.initials: M
authors.lastname: Gulías
authors.forename: Luis
authors.initials: L
authors.lastname: Castedo
authors.forename: José L
authors.initials: JL
authors.lastname: Mascareñas