SCHEDULED MAINTENANCE
Perfluoroazapropene (1) reacts with primary aromatic amines to give intermediate carbodi-imides (2) which dimerise or trimerise; intramolecular cyclisation occurs with 2-aminopyridines to give the novel hetero-cyclic system 4H-pyrido[1,2-a]-s-triazine and with aminopyrazine to give a derivative of 4H-pyrazino-[1,2-a]-s-triazine, respectively.
W. T. Flowers, R. Franklin, R. N. Haszeldine and R. J. Perry, J. Chem. Soc., Chem. Commun., 1976, 567 DOI: 10.1039/C39760000567
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