Sept-Oct 1982 Preparation of New 1,2,4-Triazines Oljan Repic, PG Mattner and MJ Shapiro Chemical Research and Development, Pharmaceutical Division, Sandoz, Inc., East Hanover, New Jersey 07936 Received March 11, 1982 Several 1,2,4-triazines were synthesized. 13C- and 15N-nmr spectroscopy was employed for structure deter- mination. /. Heterocyclic Chem., 19, 1201 (1982). 1201 Utilizing (1) a-diketones (a, 1-7) and 3-nitrobenzimidic acid hydrazide (8), ...