Unexpected N-C bond fission of fused N-alkylbenzimidazolium salts. A new approach to pyrido[1,2-α]- or pyridazino[1,6-α]benzimidazoles

1. Siro, J.G.
2. Pastor, J.
3. García-Navio, J.L.
4. Vaquero, J.J.
5. Alvarez-Builla, J.