A unified approach to quinolizinium cations and related systems by ring-closing metathesis.
[reaction: see text] The first example of an olefin ring-closing metathesis reaction on cationic heteroaromatic systems is described. Dihydroquinolizinium cations and a variety of related cationic systems are synthesized in an efficient approach from N-alkenyl alpha-vinyl azinium salts using Grubbs' catalysts.
Núñez
Ana
A
Departamento de Química Orgánica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain.
Cuadro
Ana M
AM
Alvarez-Builla
Julio
J
Vaquero
Juan J
JJ