1. Diels-alder reactions of azadienes
2. Chemistry of 1,2,3-Triazines and 1,2,4-Triazines, Tetrazines and Pentazines;Neunhoeffer,1978
3. Taylor, E.C.; Macor, J.E. J. Heterocyclic Chem., in press.
4. The structures of all new compounds reported herein were confirmed by examination of their IR, 1H and 13C NMR spectra and by microanalytical data.