title: Sonogashira reaction on quinolizium cations.
abstract: The four isomeric bromoquinolizium bromides reacted with aryl- and heteroarylacetylenes under Sonogashira conditions. The reactions proceed with moderate-to-high yields to afford aryl- and heteroarylethynyl quinolizium cations. This is the first reported example of the Sonogashira reaction on heteroaromatic cations, and it allowed easy access to potential pi-donor pi-acceptor systems bearing cationic units.
authors.affiliation: Departamento de Química Orgánica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain.
authors.forename: Domingo
authors.initials: D
authors.lastname: García
authors.forename: Ana M
authors.initials: AM
authors.lastname: Cuadro
authors.forename: Julio
authors.initials: J
authors.lastname: Alvarez-Builla
authors.forename: Juan J
authors.initials: JJ
authors.lastname: Vaquero