This study describes a novel method for the synthesis of 1,2,4‐triazines. Firstly, isonitrosoacetophenone, p‐methylisonitrosoacetophenone, and isonitroso‐1‐acetylnaphthalene were synthesized from the reaction of butylnitrite with acetophenone, p‐methylisonitrosoacetophenone, and 1‐acetylnaphthalene, respectively. Then, symmetric derivatives of 1,2,4‐triazines were prepared from the condensation reaction of keto oximes with terephthalohydrazone. However, the heteroaromatic closure was not observed in the condensation reaction of pyruvic‐aldehyde‐1‐oxime(keto oxime) with terephthalohydrazone. Structures of the obtained products were confirmed by FTIR, 1H‐NMR, and elemental analyses techniques.
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