Reaction of sebacoyl isothiocyanate with cyanoacetic acid hydrazide afforded N 1 ,N 10 -bis (1,3,4-thiadiazole) derivative which used as key precursor for the preparation of bis (1,3,4-thiadiazolo[3,2-a]pyridine, 4-thiazolidinone, chromene, and naphtho[1,2-b][1,4]oxazine) derivatives. The chemical structures of novel compounds were proven by spectroscopic analyses.