title: Cyclizations of N-stannylaminyl radicals onto nitriles.
abstract: [reaction: see text] Stannylaminyl radicals derived from radical reactions of Bu(3)SnH with azidoalkylmalononitriles exhibit highly efficient 5- and 6-exo cyclization onto either nitrile group to give aminoiminyl radicals that in turn are reduced to amidines or undergo successive 5-exo cyclization onto an internal alkene.
authors.affiliation: Dipartimento di Chimica Organica A. Mangini, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
authors.forename: Luisa
authors.initials: L
authors.lastname: Benati
authors.forename: Giorgio
authors.initials: G
authors.lastname: Bencivenni
authors.forename: Rino
authors.initials: R
authors.lastname: Leardini
authors.forename: Matteo
authors.initials: M
authors.lastname: Minozzi
authors.forename: Daniele
authors.initials: D
authors.lastname: Nanni
authors.forename: Rosanna
authors.initials: R
authors.lastname: Scialpi
authors.forename: Piero
authors.initials: P
authors.lastname: Spagnolo
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Zanardi
authors.forename: Corrado
authors.initials: C
authors.lastname: Rizzoli