Abstract

The series of new pyrimidines derivatives 2- and 6- Substituted of 5 - Acetyl - 4 - (P- phenyl) Pyrimidine and Substituted thieno [2, 3- d] Pyrimidine are synthesis by the reaction between some substituted of benzaldehydes with ethyl aceto acetate in the present of ethanol as a solvent to give the products(3e-h), when react alkyl halide with (3e-h) in ethanol obtain new Pyrimidine derivatives(4e-h) heating them with phosphorous oxy chloride in dioxane to form (5e-h) which reacts with thiourea in ethanol to produce (6e-h) these compounds reacting with chloro acetic acid to form new Substituted thieno [2,3-d] Pyrimidine (8e-h). All the synthesized compounds of new pyrimidines derivatives are identified by the physical properties by it's melting points, colors and the yields are characterized by the elemental (CHN)analysis, IR, UV Spectrum.