Cyclizations of N-stannylaminyl radicals onto nitriles.
[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.
Benati
Luisa
L
Dipartimento di Chimica Organica A. Mangini, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
Bencivenni
Giorgio
G
Leardini
Rino
R
Minozzi
Matteo
M
Nanni
Daniele
D
Scialpi
Rosanna
R
Spagnolo
Piero
P
Zanardi
Giuseppe
G
Rizzoli
Corrado
C