Synthesis of some derivatives of purines& pyrimidines and study their biological activity

This study includes preparation number of azo purines and pyrimidines derivatives were prepared by coupling of nitrogen bases with pheny1 diazonium salt.Toverify the prepared compound ultraviolet and visible    spectrum(UV-Vis),fourier transforms infrared spectrum(F.T.IR)and the ratiosof (C.H.N.) were calculated by specific analysis of the elements.