Sonogashira Reaction on Quinolizium Cations
Organic Letters2004Vol. 6(23), pp. 4175–4178
Citations Over TimeTop 14% of 2004 papers
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.
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