A new approach to polycyclic azonia cations by ring-closing metathesis.
The ring-closing metathesis (RCM) reaction of N-vinyl-alpha-(2-styryl)azinium salts, using the Hoveyda-Grubbs catalyst, leads to different tricyclic and tetracyclic azonia cations with moderate to good yields. This is the first time that a highly electron-deficient alkene such as an N-vinylpyridinium has been involved in an RCM process.
Núñez
Ana
A
Departamento de Química OrgAnica, Universidad de AlcalA, 28871-AlcalA de Henares, Madrid, Spain.
Cuadro
Ana M
AM
Alvarez-Builla
Julio
J
Vaquero
Juan J
JJ