Abstract: An efficient and simple synthetic protocol for 1,3-diazaheterocycle-fused1,2-c -1,2,3-triazoles4 has been developed.The strategy involves the reaction of 2,4,6-triazido-1,3,5-triazine 2 and heterocyclic ketene aminals (HKAs)3 in DMF medium at 90 ℃.Compound 2 has been used as the substrate efficiently providing the azide groups.This method has the advantages such as mild reaction conditions,operational simplicity and excellent yields (89%93%).