Unusual conversions of a zwitterionic polyfused triazine with electron-deficient dienophiles

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Zsuzsanna Riedl, György Hajós, András Messmer, Antal Rockenbauer, László Korecz, Gert Kollenz, Walter M. F. Fabian, Karl Peters and Eva-Maria Peters


Abstract

Investigation of reactions of the zwitterionic polycycle 1 with electron-deficient dienophiles revealed that Michael addition products 3 and 4, selective cycloadducts 2 and, in a special case, a stable dimeric radical cation 5 are formed.


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