Synthesis and Properties of Aza-ullazines.
A range of aza-ullazines, which represent a new heterocyclic core structure, were synthesized through a scalable four-step reaction, including a Sonogashira reaction and metal-free cyclization promoted by p-toluenesulfonic acid. The optical and electrochemical properties of selected derivatives were investigated, they were found to have similar absorption and emission spectra but a higher oxidation potential than the parent ullazine core.
Institut für Chemie, Universität Rostock, Albert Einstein Str. 3a, 18059, Rostock, Germany.
Sebastian
S
Boldt
Institut für Chemie, Universität Rostock, Albert Einstein Str. 3a, 18059, Rostock, Germany.
Silvio
S
Parpart
Institut für Chemie, Universität Rostock, Albert Einstein Str. 3a, 18059, Rostock, Germany.
Alexander
A
Villinger
Institut für Chemie, Universität Rostock, Albert Einstein Str. 3a, 18059, Rostock, Germany.|Leibniz Institut für Katalyse an der Universität Rostock e.V., Albert Einstein Str. 29a, 18059, Rostock, Germany.
Peter
P
Ehlers
Institut für Chemie, Universität Rostock, Albert Einstein Str. 3a, 18059, Rostock, Germany.|Leibniz Institut für Katalyse an der Universität Rostock e.V., Albert Einstein Str. 29a, 18059, Rostock, Germany.
Peter
0000-0002-7665-8912
P
Langer
cyclization; fluorescence; heterocycles; palladium; pyridine