title: Oxetane ring enlargement through nucleophilic trapping of radical cations by acetonitrile.
abstract: Oxidative electron transfer cycloreversion of trans,trans-2-cyclopropyl-4-methyl-3-phenyloxetane, using triphenylthiapyrylium perchlorate as a photosensitizer, leads to distonic 1,4-radical cations; subsequent cleavage gives rise to fragmentation products (pathway a), whereas nucleophilic trapping by acetonitrile affords a ring expanded oxazine (pathway b).
authors.affiliation: Departamento de Química-Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, E-46022, Valencia, Spain.
authors.forename: Raúl
authors.initials: R
authors.lastname: Pérez-Ruiz
authors.forename: Jose A
authors.initials: JA
authors.lastname: Sáez
authors.forename: Luis R
authors.initials: LR
authors.lastname: Domingo
authors.forename: M Consuelo
authors.initials: MC
authors.lastname: Jiménez
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Miranda