The results of allowing 3-chloro-5,6-diphenyl-l,2,4-triazine to react with various active methylene compounds, such as, cyanoacetamide, chloroacetamide, malononitrile and cyanoacetic acid hydrazide are discussed. Also, the interaction between 3-chloro-as-triazine with hydrazino derivatives or aldehyde hydrazones was reported. Both reactions conducted neutral or alkaline medium, led to the formation of various heterocyclic Systems attached to the as-triazine nucleus at position three