title: Synthesis and Bergman cyclization of a beta-extended porphyrenediyne.
abstract: Condensation of a porphyrin-2,3-dione with a 1,2-diaminoarenediyne affords a [small beta]-extended porphyrinic-enediyne: upon thermal Bergman cyclization the quinoxaline spacer positioned between the macrocycle and the enediyne prevents tandem radical cyclization to a picenoporphyrin.
authors.affiliation: Trinity University, Department of Chemistry, One Trinity Place, San Antonio, TX, 78212, USA. john.spence@trinity.edu
authors.forename: John D
authors.initials: JD
authors.lastname: Spence
authors.forename: Eric D
authors.initials: ED
authors.lastname: Cline
authors.forename: Domingo M
authors.initials: DM
authors.lastname: LLagostera
authors.forename: Patrick S
authors.initials: PS
authors.lastname: O'Toole