title: Two manifolds for metal-catalyzed intramolecular diels-alder reactions of unactivated alkynes.
authors.affiliation: Max-Planck-Institut für Kohlenforschung, 45470 Mülheim an der Ruhr, Germany. fuerstner@mpi-muelheim.mpg.de
authors.forename: Alois
authors.initials: A
authors.lastname: Fürstner
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Stimson