title: Intramolecular ene reaction of 1,6-fullerenynes: a new synthesis of allenes.
abstract: [Structure: see text] Thermal treatment of 1,6-fullerenynes bearing an alkyl group on the terminal carbon of the alkyne moiety leads quantitatively to new allenes through a reaction mechanism involving an intramolecular ene process. This reaction outcome is in contrast to that recently found for free terminal alkynes which form cyclobutene derivatives through a [2+2] cyclization mechanism.
authors.affiliation: Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, E-28040 Madrid, Spain.
authors.forename: Margarita
authors.initials: M
authors.lastname: Altable
authors.forename: Salvatore
authors.initials: S
authors.lastname: Filippone
authors.forename: Angel
authors.initials: A
authors.lastname: Martín-Domenech
authors.forename: Mireia
authors.initials: M
authors.lastname: Güell
authors.forename: Miquel
authors.initials: M
authors.lastname: Solà
authors.forename: Nazario
authors.initials: N
authors.lastname: Martín