title: Unexpected isomerism in cis-2 bis(pyrrolidino)[60]fullerene diastereomers.
abstract: Similar yet different: A one-step regio- and diastereoselective synthesis of three new bis(pyrrolidine)[60]fullerenes, one cis-1 and two unprecedented cis-2 diastereoisomers, is reported. The compounds are easily purified using simple chromatographic techniques, and were fully characterized by spectroscopic techniques and X-ray crystallography. A mechanism for the isomeric conversion observed is proposed.
authors.affiliation: Department of Chemistry, University of Texas at El Paso, 500W University Ave, El Paso, TX, 79968 (USA).
authors.forename: Marta
authors.initials: M
authors.lastname: Izquierdo
authors.forename: Maira R
authors.initials: MR
authors.lastname: Cerón
authors.forename: Núria
authors.initials: N
authors.lastname: Alegret
authors.forename: Alejandro J
authors.initials: AJ
authors.lastname: Metta-Magaña
authors.forename: Antonio
authors.initials: A
authors.lastname: Rodríguez-Fortea
authors.forename: Josep M
authors.initials: JM
authors.lastname: Poblet
authors.forename: Luis
authors.initials: L
authors.lastname: Echegoyen
keywords: azomethine ylides; cycloaddition; fullerenes; isomerization; structure elucidation